127 patents in this list

Updated:

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

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

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

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

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

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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