Mobile device impacts consistently produce peak accelerations of 100-300g during typical drop scenarios, with corner impacts generating forces up to 1000g. These mechanical loads transfer through the device housing in microseconds, making the timing and distribution of energy absorption critical for preventing internal component damage.

The fundamental challenge lies in designing case architectures that can dissipate impact energy while maintaining a form factor thin enough for practical daily use.

This page brings together solutions from recent research—including multi-layered composite structures, strategically placed shock absorber elements, modular protection systems, and cases with active energy dissipation features. These and other approaches focus on achieving maximum protection while preserving device functionality and maintaining reasonable case dimensions.

1. Mobile Phone Case with Internal Transparent Anti-Slip Pads and Protruding Corner Blocks

FOSHAN SHENLONGDA TECH CO LTD, FOSHAN SHENLONGDA TECHNOLOGY CO LTD, 2024

An anti-fall mobile phone case that provides improved drop protection and scratch resistance compared to existing cases. The case has transparent anti-slip pads inside the back panel and TPE pads inside the side frames. This prevents the phone from sliding out of the case and also protects the phone screen from scratches. The case also has protruding anti-slip blocks on the bottom corners of the side frames to further prevent drops.

2. Mobile Phone Case with Detachable Bottom Plate, Internal Shock Absorber, and Force Reducer

GUANGZHOU HUAWANGSHENG ELECTRONIC CO LTD, 2024

An anti-fall mobile phone case that provides improved protection against dropping compared to conventional cases. The case has a detachable bottom plate, an internal shock absorber, and a reducer. This allows the case to cushion impacts better by absorbing force from drops and preventing the phone from slipping out of the case. The detachable bottom plate allows access to ports and connectors without the added bulk of a fixed bottom. The internal shock absorber is a shock-absorbing material like air bags that surrounds the phone inside the case. The reducer reduces the force transmitted to the phone during drops by compressing between the phone and the shock absorber.

3. Mobile Phone Case with Corner Airbags and Internal Airbag Columns for Impact Absorption and Heat Dissipation

JIANGXI KELAI ELECTRONICS CO LTD, 2024

An anti-fall mobile phone case with corner airbags and internal airbag columns to protect the phone screen from damage when dropped. The case has corner airbags at the outer edges and internal airbag columns on the inner walls. The corner airbags absorb impact at the vulnerable corners. The internal airbag columns provide elastic support along the sides. The airbag features allow circulation of air between the phone and case to dissipate heat. The gap between the phone and case prevents overheating.

CN220711533U-patent-drawing

4. Mobile Phone Case with Dual-Component Impact Absorption System

SHENZHEN JOURNEY SUPPLY CHAIN MAN CO LTD, SHENZHEN JOURNEY SUPPLY CHAIN MANAGEMENT CO LTD, 2024

An anti-fall double protection mobile phone case that provides improved drop protection compared to conventional cases. The case has a back component and a front component attached to it. When the device falls, the force is transmitted through the front component to the back component where padded areas and rubber strips absorb the impact. This prevents the screen from breaking while still protecting the back of the device.

CN220605952U-patent-drawing

5. Protective Case with Polycarbonate Frame and TPU Buffered Corners

SHENZHEN TULASI TECH CO LTD, SHENZHEN TULASI TECHNOLOGY CO LTD, 2024

Protective case for electronic devices like smartphones that improves drop protection without adding weight and preventing yellowing. The case has a polycarbonate frame and a buffered corner. The buffered corner contains a protruding buffer made of a different material like TPU. This buffer absorbs impact forces to protect the device from drops. It also prevents the device from scratching surfaces when placed down. Using a separate buffered corner instead of a full TPU outer frame reduces weight and prevents yellowing from sweat exposure.

CN220570571U-patent-drawing

6. Protective Case with Composite Fiber-Sandwiched Frame for Enhanced Impact Resistance

SHENZHEN TULASI TECH CO LTD, SHENZHEN TULASI TECHNOLOGY CO LTD, 2024

Electronic device protective case with improved drop protection by combining hard and soft materials. The case has a back panel and frame that surrounds the device. The frame is made of side frames, an inner frame piece, and a carbon fiber or composite fiber piece sandwiched between them. This provides both hardness and cushioning for better drop protection compared to just hard or soft materials.

CN220570780U-patent-drawing

7. Mobile Phone Case with L-Shaped Corner Protectors, Movable Bumpers, Anti-Slip Strips, Heat Dissipation Ports, and Dust Covers

HENAN AOKAISHENG INTELLIGENT TECH CO LTD, HENAN AOKAISHENG INTELLIGENT TECHNOLOGY CO LTD, 2024

Mobile phone case that provides improved drop protection and heat dissipation. The case has features like L-shaped corner protectors, movable bumpers, anti-slip strips, heat dissipation ports, and dust covers. The corner protectors prevent damage when the phone falls. The movable bumpers absorb impact forces. The anti-slip strips improve grip and prevent slipping. The heat dissipation ports allow airflow between the case and phone to cool the phone. The dust covers prevent debris from entering the case.

CN220528114U-patent-drawing

8. Mobile Phone Protective Case with Stepped Design and Raised Bumps for Enhanced Impact Cushioning

ZHOU YIQIANG, 2024

An anti-fall mobile phone protective case with improved drop protection compared to traditional cases. The case has a stepped design with raised bumps on either side and grooves between them. The phone sits between the bumps. When dropped, the phone lands on the stepped edge between the bumps and grooves, providing extra cushioning and prevention of corner impacts. This reduces the risk of shattering or cracking the phone screen and body.

CN220401792U-patent-drawing

9. Mobile Phone Case with Dual-Shell Enclosed Airbag Cushioning System

SHENZHEN TULASI TECH CO LTD, SHENZHEN TULASI TECHNOLOGY CO LTD, 2024

All-round airbag protective case for mobile phones that provides better drop protection compared to traditional corner bumpers. The case has an outer shell and an inner shell with sealing openings. Air is trapped between the shells to create an airbag cushion that surrounds the phone. This provides impact absorption from all sides instead of just the corners. The sealed airbag prevents air leakage while still allowing compression and expansion for cushioning.

10. Mobile Phone Case with Damping Fluid-Filled Buffer Cavity and Elastic Surface Springs

SHENZHEN YISE TECH CO LTD, SHENZHEN YISE TECHNOLOGY CO LTD, 2023

Shock-absorbing and anti-fall mobile phone case with improved drop protection and grip. The case has a unique inner structure with a buffer cavity filled with damping fluid. The bottom plate has an elastic outer surface and contacts springs on the inner sides. This cushions impacts and allows quick reset without external force. The outer bottom plate also has protrusions to increase friction with the hand and prevent slipping.

CN117319540A-patent-drawing

11. Mobile Phone Case with Reinforced Corner Mechanism Featuring Embedded Sliding Rubber Plate and Air Cushion

SHENZHEN RIXINLONG ELECTRONIC TECH CO LTD, SHENZHEN RIXINLONG ELECTRONIC TECHNOLOGY CO LTD, 2023

Mobile phone case with reinforced corners to prevent falls. The case has a four-corner anti-fall mechanism around the perimeter. Inside the case, there is a removable embedded mechanism with a rubber cover and an inserted rubber plate. The embedded mechanism slides into the case and the corners. The four-corner anti-fall mechanism attaches to the front end of the embedded mechanism. It contains a rubber block and air cushion bubble. This reinforced corner design provides improved protection against dropping and impacts compared to regular cases.

12. Mobile Phone Case with Internal Buffer Strips and Protruding Corner Guards

GUANGZHOU JINGPU ELECTRONIC TECH CO LTD, GUANGZHOU JINGPU ELECTRONIC TECHNOLOGY CO LTD, 2023

Mobile phone case with improved drop protection by using internal buffer strips and external corner guards. The case has a frame around the phone with protruding corner guards. Inside the frame, there are multiple internal buffer strips on the walls. When the phone falls, the impact energy is absorbed by the internal strips and corner guards to prevent damage.

13. Mobile Phone Case with Groove-Filled Buffering Particles and Protruding Anti-Collision Strip

HU QINYIN, 2023

Anti-fall mobile phone case with improved protection for larger, heavier phones that mitigates impact forces when dropped. The case has a housing with a long groove that forms a closed space. Buffering particles fill this space. An anti-collision strip with a tab fits into the groove to close the space. The strip protrudes from the housing side. This configuration provides energy absorption and impact resistance for the corners without adding bulk. The strip and particles protect against corner impacts, while the closed space of particles absorbs rear impacts.

14. Frameless Mobile Phone Case with Embedded Flexible Buffers in Mounting Grooves

GUANGZHOU XUNDD ELECTRONIC TECH DEVELOPMENT CO LTD, GUANGZHOU XUNDD ELECTRONIC TECHNOLOGY DEVELOPMENT CO LTD, 2023

Frameless mobile phone case with improved drop protection by embedding flexible buffers into the phone's existing mounting grooves. The case has a hard shell with protective sheets on the top and bottom. The phone sits in the groove formed by the shell and sheets. The flexible buffers consist of connected strips that are inserted into the phone's groove. This provides cushioning around the phone's edges without a separate frame.

15. Mobile Phone Case with TPU Frame and Recessed Airbag Cavities Containing Protruding Shock-Absorbing Patterns

DONGGUAN WEISONG IND CO LTD, DONGGUAN WEISONG INDUSTRIAL CO LTD, 2023

Mobile phone case with improved shock absorption to prevent damage when dropped. The case has a TPU frame with recessed airbag cavities at the corners. These cavities contain protruding shock-absorbing patterns inside. The TPU frame connects to a PC back shell enclosing the phone. This provides a combined case with integrated shock absorption. The recessed airbags and protruding shock-absorbing patterns inside cushion the phone corners when dropped, preventing direct impacts.

CN220087336U-patent-drawing

16. Mobile Phone Case with Elastic Corner Inserts and Limiting Groove Assembly

DONGGUAN CITY XIANGMI HARDWARE TECH CO LTD, DONGGUAN CITY XIANGMI HARDWARE TECHNOLOGY CO LTD, 2023

An anti-fall mobile phone case with improved drop protection compared to conventional cases. The case has elastic anti-fall pieces at the corners that match the bending arcs of the phone case. These elastic corners protect the phone from impacts. Limiting grooves on the case corners hold protrusions from the elastic pieces. This stable assembly prevents the elastic pieces from detaching while still allowing them to deform and absorb impacts.

17. Detachable Corner Protection System with Curved Absorbent Inserts for Mobile Phone Cases

REARTH INC, 2023

A detachable corner protection system for mobile phone cases that allows customization and better impact absorption compared to fixed corner guards. The case has detachable absorbent inserts that can be added to the inner corners and edges. The absorbent inserts are made of softer material than the case edges. They have curved contact surfaces that fit inside the case corners and extenders that protrude into the case interior. This allows the inserts to be inserted into the case corners and secured without covering the case edges. The inserts provide targeted corner protection that can be customized and swapped out as needed.

18. Mobile Phone Case with Internal Airbag System and Heat Dissipation Cavities

CHONGQING LANFANG TECH CO LTD, CHONGQING LANFANG TECHNOLOGY CO LTD, 2023

Explosion-proof mobile phone case with an internal airbag system to protect the phone from drops. The case has an airbag-shaped protrusion on the corners. Inside the case, there is an airbag storage cavity, cushion layer, and spring. When the phone falls, the airbag inflates from compressed air in the cavity to cushion the impact. The case also has airbag bumps on the front and heat dissipation cavities inside.

19. Mobile Phone Case with Internal Rubber Strips and External Protruding Bumps for Drop Protection

DONGGUAN WEICHUANG SILICONE RUBBER TECH CO LTD, DONGGUAN WEICHUANG SILICONE RUBBER TECHNOLOGY CO LTD, 2023

Mobile phone case with integrated cushioning to protect the phone from drops. The case has rubber strips fixed to the inside bottom plate and protruding bumps on the outside facing away from the phone. The bumps provide cushioning when the phone falls onto a surface. Multiple bumps are spaced apart to prevent contact between the phone and surface. This allows the phone to drop without direct impact on the screen or components.

CN219659772U-patent-drawing

20. Smartphone Case with Hollow Rubber Buffers, Sponge Strips, Silica Gel Blocks, and Corrugated Rubber Sleeves for Enhanced Impact Absorption

CHEN HUAMING, 2023

Multifunctional smartphone case with improved drop protection. The case has features like hollow rubber buffers, sponge strips, silica gel blocks, and corrugated rubber sleeves that provide better impact absorption and drop protection compared to traditional cases. The hollow rubber buffer at the bottom of the case has an internal sponge strip for added cushioning. The middle of the case has a sponge strip. The silica gel blocks on the sides have hollow cavities with corrugated rubber sleeves. This configuration provides multiple layers of shock absorption to better protect the phone from drops and impacts.

21. Mobile Phone Case with Reinforced Corners and Buffered Cavity for Impact and Explosion Resistance

JINAN ANXING ELECTRICAL TECH CO LTD, JINAN ANXING ELECTRICAL TECHNOLOGY CO LTD, 2023

Drop-proof and explosion-proof mobile phone case with reinforced corners to protect the device from damage when dropped and prevent internal components from being damaged during explosions. The case has four corner guards, a buffer cavity, and a partition to absorb impacts. The corners are reinforced with inner linings and wear-resistant sheets. The back of the case has a fitting groove for the corner reinforcement. The partition creates a buffered cavity for the phone to lift and cushion against drops. Port covers protect the ends.

22. Mobile Phone Case with Composite Board and Bidirectional Anti-Drop Padding

SHENZHEN RUNSUN DEV CO LTD, SHENZHEN RUNSUN DEVELOPMENT CO LTD, 2023

Mobile phone case with internal and external anti-drop features to provide better protection against drops. The case has a composite board with raised edges and a fixed side panel. The inside of the side panel has an anti-drop inner pad, and the outside has an anti-drop outer pad. This provides drop protection from both directions. The composite board also has buttons covered by transparent colored plastic.

CN219459135U-patent-drawing

23. Mobile Phone Case with Internal Cushioning, Sliding Impact Absorption Bar, and Expandable Airbag System

SHENZHEN RUNSUN DEV CO LTD, SHENZHEN RUNSUN DEVELOPMENT CO LTD, 2023

Drop-resistant mobile phone case with internal cushioning to protect the phone from falls. The case has an anti-fall plate on the back surface with an internal anti-collision cushion fixed to the plate. It also has a sliding long bar in a groove on the right side. When the phone falls, the bar slides into the groove to compress the cushion and absorb impact. The case also has an inner first airbag fixed to the anti-fall plate that expands on impact to further cushion the phone.

24. Two-Piece Mobile Phone Case with Integrated Corner Protection, Shock Absorption Structures, and Internal Heat Sinks

ANHUI CHANGWANG INTELLIGENT TECH CO LTD, ANHUI CHANGWANG INTELLIGENT TECHNOLOGY CO LTD, 2023

A four-corner anti-collision mobile phone protective case with corner protection and shock absorption. The case has a two-piece design with a first and second protective shell that fit around the corners of the phone. Each corner of the shells has a protective structure inside. Heat sinks are installed on the inner surfaces of the shells. Mounting grooves are provided on the back sides and elastic connecting strips are installed inside them. This provides corner protection and shock absorption to prevent damage when the phone is dropped. The case has a slim profile with a total thickness of less than 5mm to avoid bulkiness.

25. Mobile Phone Case with Concave Cavity Buffer Pad and Integrated Soft Rubber Connecting Plate

DONGGUAN HAOTONG PLASTIC TECH CO LTD, DONGGUAN HAOTONG PLASTIC TECHNOLOGY CO LTD, 2023

Mobile phone case with improved drop protection. The case has a body, a buffer pad inside the body, and a connecting plate at the front end of the buffer pad. The buffer pad is shaped like a concave cavity with the outer edge in contact with the inner wall. This provides cushioning for impact. The connecting plate at the front end is also made of soft rubber and contacts the inner wall. This creates a placement groove between the connecting plate and cavity to securely hold the phone in place. The combined buffer pad and connecting plate provide better drop protection compared to just a single pad.

26. Protective Case with Embedded Metal Back Frame in Grooved Sidewalls for Enhanced Impact Absorption

Shenzhen Zhongchuang Excellence Technology Co., Ltd., SHENZHEN CHOTON ZHUOYUE TECHNOLOGY CO LTD, 2023

Mobile terminal protective case with improved drop protection by embedding a metal back frame into grooves on the case. The case has a main body with a bottom, transition part, and side. Grooves are provided on the side away from the bottom. The metal back frame fits into these grooves, extending around corners. This wraps and protects the case corners. The metal frame absorbs impact force when dropped, preventing the device from separating. The grooves also enhance scratch resistance.

CN113905120B-patent-drawing

27. Mobile Phone Case with Integrated Corner Airbags and Reinforcement Structures

DUAN XIAOFANG, 2023

Four-corner airbag anti-drop mobile phone case that provides better protection against falls compared to regular cases. The case has integrated airbags at the corners that cushion and absorb impact when the phone drops. The airbags have a wrap around the corners and enclose a cavity with upper and lower openings. This allows the airbags to deform and absorb impact at the vulnerable corners without detaching. Reinforcement structures inside support the airbags for better cushioning.

28. Mobile Phone Case with Removable Corner Shock Absorbers and Detachable Edge Portions

REARTH INC, 2023

Mobile phone case with detachable shock absorbers to protect the corners of the device. The case has a removable absorber at each corner that can be swapped out for customization. The absorbers are made of softer materials like TPU, TPE, or silicone compared to the main case. This allows the user to replace worn absorbers or choose different levels of protection. The absorbers fit into detachable edge portions on the case. When removed, a space is left between the edge and protrusion to prevent binding. The detachable absorbers also improve corner protection compared to fixed corner bumps.

KR20230066739A-patent-drawing

29. Phone Case with Inflatable Airbag Corner Protectors and Shock-Absorbing Mechanisms

SHENZHEN KEWEICHUANGXIANG INTELLIGENT TECH CO LTD, SHENZHEN KEWEICHUANGXIANG INTELLIGENT TECHNOLOGY CO LTD, 2023

Protective phone case with improved drop protection for rugged environments. The case has corner protectors with inflatable airbags, sliding sliders, and limit blocks to absorb impact force. This reduces forces transmitted to the phone components. The case also has shock-absorbing features for the sides, back, and screen to further protect the phone. It uses compression springs, extruded pads, and sliding sliders to disperse impact force around the case. The case also expands airbags and raises the screen to prevent contact on impact. This provides multi-directional drop protection for rugged environments.

30. Mobile Phone Case with Spring-Loaded Air Cavities and Flexible Impact-Absorbing Housing

SHENZHEN LANHAIJIAHE ELECTRONIC TECH CO LTD, SHENZHEN LANHAIJIAHE ELECTRONIC TECHNOLOGY CO LTD, 2023

Mobile phone case with improved drop protection and convenience. The case has a flexible housing that surrounds the phone and has a rectangular cavity to hold it. An annular edge plate seals the cavity. Inside the housing are elongated air cavities filled with spring assemblies. These springs cushion the phone when dropped and prevent damage. The flexible housing material allows it to compress and absorb impact forces. The case also has a shell-out section to provide easy access to ports and buttons.

CN218941146U-patent-drawing

31. Mobile Phone Case with Rounded Corners and Integrated Transparent Back Cover

LUO WENTIAN, 2023

Drop-proof mobile phone case with rounded corners and an integrated transparent back cover to protect the phone from drops and prevent damage to the case and phone. The case has a shell with a face cover and frame that fit together. The frame and cover have rounded corners and engage to form a support portion. The back cover is integrated into the frame and is transparent to allow viewing the phone screen. This design provides drop protection with rounded corners, prevents corner cracking, and prevents the back cover from separating from the case during drops.

32. Protective Case with Edge Cushioning and Corner Buffers for Enhanced Impact Resistance

SHENZHEN RANVOO TECH CO LTD, SHENZHEN RANVOO TECHNOLOGY CO LTD, 2023

Drop-proof protective case for electronic devices like smartphones with improved impact resistance. The case has a frame with cushioning around the edges and corner buffers. The edge cushioning protects areas where the device contacts surfaces besides the corners when dropped. The corner buffers provide additional protection at the vulnerable corners. This provides comprehensive protection by covering more areas where impact occurs.

33. Smartphone Case with Multi-layer Shock-absorbing and Waterproof Interlayers and Sliding Anti-fall Buffer

JIANGXI AIPURUO TECH CO LTD, JIANGXI AIPURUO TECHNOLOGY CO LTD, 2023

Waterproof and drop-resistant smartphone case with improved protection against water and drops compared to conventional cases. The case has multiple layers of shock-absorbing and waterproof materials between the phone and the case. This includes a first shock-absorbing and waterproof interlayer between the phone and the case, and an anti-fall shock-absorbing buffer that slides in channels inside the case. This configuration provides better waterproofing by sealing the phone edges and surfaces, and better drop protection by cushioning impacts. The case also has magnetic covers over the ports to further seal against water and prevent dust.

CN218679142U-patent-drawing

34. Smartphone Case with Corner Bumpers and Laminated Shock-Absorbing Structure

LONGMEN COUNTY HUAXIN HIGH NEW TECH CO LTD, LONGMEN COUNTY HUAXIN HIGH-NEW TECHNOLOGY CO LTD, 2023

Corner protection case for smartphones to prevent screen and glass damage when dropped. The case has corner bumpers, cushioned elastic pads, and a laminated shock-absorbing structure at the corners. It also has features like nitrogen-filled cavities, static dissipation layers, and water vapor dissipation layers to further protect the device from impacts, static, and moisture. The case tightly connects the outer shell and inner liner with screws.

35. Protective Shell with Convex Protrusion and Dual-Stage Impact Absorption for Electronic Devices

SHENZHEN RANVOO TECH CO LTD, SHENZHEN RANVOO TECHNOLOGY CO LTD, 2023

An anti-drop protective shell for electronic devices like smartphones that enhances drop protection compared to existing airbag-based designs. The shell has a base plate with a convex protrusion that extends into the side frame. This convex protrusion is joined with the frame and a separate secondary anti-drop component to form an airbag chamber. When the device falls, the convex protrusion absorbs some impact first before transferring it to the airbag chamber for further absorption. This two-stage impact resolution improves drop protection compared to just relying on the airbag. The protrusion also supports the secondary component and improves stability.

36. Mobile Phone Case with Detachable Corner Guards Featuring Shock-Absorbing Cavities and Textured Contrast

JUNTIANCHENG DONGGUAN TECH CO LTD, JUNTIANCHENG TECHNOLOGY CO LTD, 2022

Mobile phone protective case with composite material texture that provides improved protection and durability compared to conventional cases. The case has a shell with corners surrounded by detachable corner guards. The guards have shock-absorbing cavities with balls inside. These guards fit into positioning grooves on the case bottom. This allows the guards to detach for easy removal, but when installed they provide corner protection and absorb impacts. The guards also have a texture different from the shell for a contrasting tactile feel. The detachable guards prevent scratches and damage from impact, while still allowing the case to be removed for cleaning. The guards can also be replaced if worn or damaged.

37. Mobile Phone Case with Dual Bracket System Incorporating Removable Shock-Absorbing Bracket

DONGGUAN LINZE COMMUNICATION EQUIPMENT CO LTD, 2022

Internal shock-absorbing mobile phone case with brackets that protect the internal electronics from impact and vibration. The case has two internal brackets, one fixed to the case and the other removable. The removable bracket has shock-absorbing components and mounting components. It inserts into the case slot and can be secured with screws. This allows installing delicate components in the fixed bracket while protecting them with the removable bracket. The removable bracket can be easily disassembled for maintenance without affecting the fixed components. The shock-absorbing components dampen impacts to the removable bracket and prevent damage to the internal electronics.

38. Mobile Phone Protective Case with Elastic Shock-Absorbing Cavity and Graphene Oxidation Barrier

SHENZHEN YISE TECH CO LTD, SHENZHEN YISE TECHNOLOGY CO LTD, 2022

Shock-resistant and anti-drop mobile phone protective case with improved drop protection and anti-oxidation properties. The case has an internal spaced cavity with elastic members to absorb shock and protect the phone. It also has removable rubber corner protectors that can be replaced if worn. The exterior of the case is covered in a graphene film to prevent oxidation. The case components like the frame, corners, and elastic members are all designed to work together for enhanced drop protection and longevity.

39. Mobile Phone Case with Perimeter Grooves Housing Embedded Anti-Slip Elements and Impact-Resistant Protrusions

DONGGUAN CITY XIANGMI HARDWARE TECH CO LTD, DONGGUAN CITY XIANGMI HARDWARE TECHNOLOGY CO LTD, 2022

Anti-slip mobile phone case with improved grip and drop protection. The case has grooves around the perimeter with embedded anti-slip pieces and protrusions. The anti-slip pieces increase friction between the phone and hand to prevent dropping. The protrusions provide impact protection if the phone falls. Additionally, an internal bracket can be rotated into position to support the phone. This allows the case to have both anti-slip and anti-drop features.

40. Mobile Device Protective Case with Buffered Corner Posts and Rectangular Frame

GUANGZHOU EASTMATE TECH CO LTD, GUANGZHOU EASTMATE TECHNOLOGY CO LTD, 2022

Protective case for mobile devices that provides improved drop protection compared to traditional silicone cases. The case has a rectangular frame with buffered corners that have protruding posts to abut against the device. This provides better shock absorption and drop protection compared to fully enclosed cases.

CN216959951U-patent-drawing

41. Modular Multi-Layer Mobile Phone Case with Disassemblable Shock-Absorbing Structure

DONGGUAN GROUANLI ELECTRONIC SCIENCE AND TECH LIMITED CO, DONGGUAN GROUANLI ELECTRONIC SCIENCE AND TECHNOLOGY LIMITED CO, 2022

Multi-layer dispersion absorption mobile phone case that provides improved drop protection compared to conventional cases. The case has multiple layers of shock-absorbing material arranged in a disassemblable modular design. The base plate has a fixed frame with pins and slots that connects to a removable protective frame. Rubber particles fill a groove between the frames. This allows flexible disassembly for cleaning and maintenance. The multiple layers and dispersed shock absorption slows impact force and prevents component damage when the phone drops.

CN216122549U-patent-drawing

42. Aluminum Alloy Mobile Phone Case with Sliding Frame and Integrated Rubber Sleeve

SHENZHEN GOOD STANDARD SCIENCE AND TECH LIMITED CO, SHENZHEN GOOD STANDARD SCIENCE AND TECHNOLOGY LIMITED CO, 2022

An aluminum alloy mobile phone case with improved grip, drop protection, and shock absorption. The case has an inner rubber sleeve wrapped around the phone and an outer aluminum frame. The frame is composed of upper and lower halves connected by a sliding piece. This allows the frame to compress slightly when dropped to cushion the phone. The rubber sleeve protrudes through the frame and sliding piece, providing a grippy exterior and preventing the phone from sliding out. The sliding column in the frame allows the halves to separate slightly for inserting the phone. The case has a unique design that combines the benefits of rubberized grip and shock absorption with the rigidity and protection of metal.

CN216122551U-patent-drawing

43. Mobile Phone Case with Removable Protective Shell and Corner-Limited Movement Design

SHENZHEN KANGCHENGTAI IND CO LTD, SHENZHEN KANGCHENGTAI INDUSTRIAL CO LTD, 2021

Mobile phone case design that provides better protection for the phone when dropped. The case has a removable protective shell that extends beyond the main case body. The corners of the main case have limits that restrict the phone's movement. The shell has cavities at those corners that match the limits. This prevents direct impact on the phone when dropped. The phone can still move slightly within the limits, but the shell cushions the blows.

44. Mobile Phone Case with Corner Buffer Grooves and V-Shaped Bracket

SHENZHEN UGREEN TECH CO LTD, SHENZHEN UGREEN TECHNOLOGY CO LTD, 2021

Shock-absorbing and anti-fall mobile phone case with improved protection against drops and impacts. The case has buffer grooves at the inner corners of the frame that form a closed space around the phone. When the phone is dropped or bumped, air inside the grooves compresses and deforms to cushion the impact. Vents in the grooves allow the air to escape. The case also has a bracket that opens and closes like a V-shape to support the case upright or horizontally.

45. Mobile Phone Case with Edge-Integrated Impact Absorbing Columns, Springs, and Balls

XUZHOU CHUANGFUJIA HOUSEHOLD CO LTD, 2021

Mobile phone case with improved drop protection for preventing damage to the screen and camera when the phone falls. The case has protective components at the edges of the front that absorb impact and cushion the phone screen. These components consist of columns, springs, and balls that isolate and protect the screen from impact when the phone falls. The case also has elastic buckles at the edges to secure the phone inside the case. This combination of edge protection and elastic retention provides better drop protection compared to standard cases.

46. Mobile Phone Case with Internal Air Cushion Corner Protection and Detachable Stepped Connections

GUANGZHOU YIZSUN MOULD CO LTD, 2021

Internal drop protection for a mobile phone case that provides better drop resistance compared to external thickening without adding bulk. The case has air cushions at the corners inside the case that wrap around the phone edges when dropped. Each cushion has vent holes to release air pressure. This allows the cushions to compress and absorb impact at the vulnerable corners instead of the phone itself. The cushions are arched to fully envelop the phone edges. The case body has detachable bottom and stepped connections to secure it.

47. Mobile Phone Case with Front Edge Protective Strip, Fixed Ring, Sponge Block Grooves, and Elliptical Rear Opening

SHENZHEN TIANXING HENGDA TECH CO LTD, SHENZHEN TIANXING HENGDA TECHNOLOGY CO LTD, 2021

Mobile phone case with improved drop protection to prevent screen damage. The case has a protective strip around the front edges, a fixed ring at the bottom, and sponge blocks fixed inside grooves on the case sides. This provides cushioning and absorption to prevent screen fractures when the phone falls. The rear has an elliptical opening with a protective ring and a mirror. The case also has a connecting band on the fixed ring.

48. Mobile Phone Case with Segmented Buffer Sections and Narrow Grip Zone

SHENZHEN KANGCHENGTAI IND CO LTD, SHENZHEN KANGCHENGTAI INDUSTRIAL CO LTD, 2021

A mobile phone case design that improves user experience by providing better grip and protection without adding bulk. The case has separate buffer sections for the top and bottom parts of the phone, connected by a narrow middle section for gripping. This allows better handholding compared to a single wide buffer around the whole case. The narrow middle section prevents the case from being too thick and heavy while still protecting the phone's vulnerable areas like camera, charging port, and mic. The case also has features like sound transmission holes, thermochromic layers, and limiting plates to enhance functionality and durability.

CN215120908U-patent-drawing

49. Electronic Device Case with Rigid Base and Scalloped Flexible Perimeter Bumper

Incase Designs Corp., 2021

A protective case for electronic devices like smartphones and tablets that provides impact protection while allowing easy access to device features. The case has a rigid base made of a first plastic material with a higher durometer (hardness) than the perimeter bumper, which is made of a softer, more flexible plastic material. The scalloped perimeter bumper extends around the device to cushion and protect the sides while still allowing buttons and ports to be easily accessed.

50. Electronic Device Case with Impact-Absorbing Spherical Ball Surface Coating

ELITAS EDIP ALI, 2021

Protective case for electronic devices like phones and tablets that has an inner surface and outer surface covered in tiny spherical balls made of an impact-absorbing material. These balls provide improved shock protection compared to traditional cases. They are applied during manufacturing by spreading or laying the balls on the inner and/or outer surfaces. The spherical balls have separate shock-absorbing properties that enhance impact protection compared to a solid surface. The balls also help with device insertion by creating channels near corners.

WO2021216015A1-patent-drawing

51. Mobile Phone Case with Metal Frame and Multi-Layered Impact-Absorbing Structure

52. Mobile Phone Case with Thickened Corner Frame and Internal Corner Indentations

53. Protective Enclosure with Multi-Part Waterproof Seal and Shock-Absorbing Members

54. Dual-Layer Phone Case with Integrated Rotatable Stand and Interlocking Shell Mechanism

55. Mobile Phone Case with Honeycomb Interlayer and Shear Thickening Glue for Impact Absorption

The patents shown here demonstrate a variety of techniques for obtaining excellent shock absorption. Detachable parts, integrated safety features, and multi-layered materials are some of these innovations. Certain solutions even provide benefits like better heat management or longer battery life, which go above and beyond basic protection

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