122 patents in this list

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Waterproof phone cases face increasingly demanding requirements as devices grow more sophisticated. Current designs must maintain IP68 protection while accommodating multiple camera arrays, precise biometric sensors, and wireless charging—all while managing thermal loads that can exceed 40°C during intensive use. Testing shows that traditional gasket seals can degrade under these conditions, particularly around port openings and speaker membranes.

The fundamental challenge lies in maintaining complete water protection while preserving device functionality and thermal management across all usage scenarios.

This page brings together solutions from recent research—including advanced membrane acoustics, multi-stage sealing systems, pressure-equalizing vents, and thermal-aware case architectures. These and other approaches focus on practical implementations that balance protection with daily usability.

1. Mobile Phone Case with Sliding Bracket and Sealable Door Cover

SHENZHEN XUNTENG TECH CO LTD, SHENZHEN XUNTENG TECHNOLOGY CO LTD, 2024

A waterproof case for protecting mobile phones from water damage. The case has a sliding inner bracket, a door cover with an opening and closing mechanism, and a waterproof component inside the door cover. The sliding inner bracket allows assembly without fully disassembling the case. The door cover seals the phone's ports when closed and opens to access them. The waterproof component inside prevents water ingress when the door is closed. The case has windows for viewing the phone screen and buttons.

2. Waterproof Phone Case with Visual Seal Verification Mechanism

DONGGUAN SHENHAI SPORTS PRODUCT CO LTD, 2024

Self-checking sealing device for waterproof phone cases that allows users to visually verify the sealing effectiveness of the case before using it. The device has a mechanism inside the case opening that seals when compressed. When the case is closed, a bulge forms in the front soft film due to trapped air. This indicates a proper seal. If the seal fails, the bulge will not form. The device prevents incorrect assumptions about the case's waterproofing and prevents phones from getting damaged from water intrusion.

3. Two-Piece Silicone Mobile Phone Case with Sliding Housings and Integrated Port Sealing Mechanism

YUEQING YUFENG NEW MAT CO LTD, YUEQING YUFENG NEW MATERIAL CO LTD, 2024

Silicone case for mobile phones with waterproof functionality that prevents water ingress into the phone's charging and speaker ports. The case splits into two pieces, a main housing and an auxiliary housing, that slide onto the phone's sides. A connecting component joins the housings. An opening and closing component seals the matching slots for the phone's ports. The split design allows sliding the housings onto the phone ends, preventing dust and water entry. The connecting component maintains stability. The opening component seals the ports.

4. Mobile Device Enclosure with Waterproof Membrane and Sealing Components

SHENZHEN SAGAMOBILE CO LTD, 2023

A high-sealing waterproof mobile phone with improved protection against water intrusion into sensitive areas like speakers, cameras, charging ports, and buttons. The phone has a protective cover with a waterproof membrane over the upper end, sealing components at the lower end, and waterproof plugs over the charging port and speaker. The sealing components have raised blocks with pressing buttons, anti-slip particles, and a sealing sleeve. This prevents water from entering the phone through these areas and causing damage.

5. Modular Waterproof Mobile Phone Case with Snap-On Sandwich Assembly and Replaceable Back Cover Component

DONGGUAN YUHENG SPORTING GOODS CO LTD, 2023

Waterproof mobile phone case that provides good protection without adding excessive bulk and weight. The case has a back cover that snaps onto the phone and a front cover that snaps onto the back cover. This sandwich-style assembly protects the phone. The front cover has a screen window for touch input and a camera window aligned with the phone's camera. The back cover has a separate window for the phone's rear camera. This allows normal camera and screen use. The back cover also has a removable plastic cover aligned with the phone's back. If this cover gets damaged, it can be replaced separately, reducing case replacement costs.

6. Detachable Waterproof Case with Sliding Buckle Mechanism and Clamping Blocks for Button Mobile Phones

SHENZHEN DESHENG MOBILES TECH CO LTD, SHENZHEN DESHENG MOBILES TECHNOLOGY CO LTD, 2023

A detachable waterproof case for button mobile phones that provides complete waterproof protection. The case has an upper and lower shell that can be separated to access the phone. The shells have extended clamping blocks on the top and bottom surfaces. The upper shell slides and buckles onto the lower shell using the clamping blocks. This creates a watertight seal around the phone when the shells are closed. A waterproof ring completes the seal around the top edge of the lower shell.

7. Smartphone Outer Shell with Internal Sealing and Corner Impact Gussets for Port Encapsulation

SHENZHEN TUGAO INTELLIGENT CO LTD, 2023

Smartphone with deep professional waterproofing that prevents water ingress even if the user forgets to close the ports. The phone has an outer shell with seals inside the top and bottom padding. These seals create a tight barrier around the ports like headphone jack and charging connector. Additionally, the shell has corner impact gussets on top and bottom to protect against drops. This complete encapsulation of the ports prevents water from entering the phone even if the user accidentally leaves the ports open.

8. Smartphone with Enclosed Charging Port Featuring Waterproof and Explosion-Proof Assembly

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

Waterproof explosion-proof smartphone with a fully enclosed charging port to prevent water ingress. The charging port is located at the bottom of the phone and is covered by a waterproof assembly. The assembly has a protective cover, a round hole, a connecting strip, a card, and a waterproof plug. The card slides into the hole and connects to the charging port inside the phone. The plug screws onto the card to seal the port when not in use. This enclosed design prevents water from entering the charging port even if the phone is submerged.

CN219627752U-patent-drawing

9. Injection Molded Case with Transparent Film Cover, Rubber Seals, Antenna Channel, and Hinged Bottom Cover for Waterproofing

KECHENG PRECISION MOLDING TECH WUXI CO LTD, KECHENG PRECISION MOLDING TECHNOLOGY WUXI CO LTD, 2023

Injection molded case for emergency communication devices that provides superior waterproofing. The case has features like a transparent film cover over the display, waterproof rubber seals around buttons, a vertical channel with a removable plug for the antenna, and a hinged waterproof cover over the bottom plate. These elements prevent water ingress into the device through openings like the display, buttons, antenna, and bottom ports.

CN219287588U-patent-drawing

10. Waterproof Case with Rotatable Cover and Soft Plug for Underwater Charging

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

Waterproof case for terminal equipment like smartphones that allows charging underwater while maintaining anti-collision capability. The case has a rotatable cover over the charging port. The cover has a hard side connected to the case and a soft rubber plug attached to the cover. Turning the cover seals the plug into the port or opens it for charging. This provides waterproofing when closed underwater, but allows charging when open on land. The soft rubber plug seals better than a rigid plug while the hard case protects against impacts.

11. Waterproof Mobile Phone Case with U-Shaped Internal Support Bar for Frozen Conditions

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

A waterproof case for mobile phones that allows easy removal of the device under cold water conditions. The case has a U-shaped support bar inside the cavity that the phone sits on. This bar allows the phone to be inserted and removed from the case even when the water inside the case has frozen due to cold temperatures. The U-shape of the bar prevents the phone from sticking to the frozen water on the case walls.

12. Mobile Phone Case with Sheath Groove and Waterproof Buckle-Attached Transparent Membrane Cover

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

Waterproof mobile phone case with improved water resistance compared to conventional cases. The case has a sheath with an inner groove for the phone and an outer card slot. A separate waterproof cover has a transparent membrane over the bottom. The cover attaches to the card slot using a waterproof buckle. This design provides full waterproof protection for the phone when the cover is closed over the sheath.

13. Waterproof Phone Case with Sliding Cover for Port and Speaker Protection and Removable Heat Sink Mechanism

ZHOU MINJIE, 2023

Waterproof phone case that provides protection for charging ports and speaker holes from water ingress. The case has a sliding cover that can be pushed to disconnect the charging port and slide out to access the speaker holes. This allows quick disassembly for cleaning or repair. The cover slides on tracks inside the case body. An external heat sink with sliding rods inside can be pushed to disconnect and remove the heat sink. A spring resists to keep the rods in place. This allows quick disassembly and reassembly of the heat sink for cleaning without tools.

14. Mobile Phone Case with Interchangeable Rubber Plugs for Waterproof and Audio Configurations

吴志卫, WU ZHI-WEI, 2022

A two-in-one mobile phone case that can switch between waterproof and audio functionality by interchangeable rubber plugs. The case has an upper and lower shell that enclose a cavity for the phone. It has slots for cards on the upper shell and a lower slot for a rubber plug. The upper plug can be removed and replaced with a waterproof plug to seal the case for waterproofing. The lower plug can be replaced with an open plug to allow audio from the phone. This provides a convenient way to switch between waterproofing and audio without disassembling the case. The upper plug covers the charging and headphone jacks, and the lower plug has soft rubber pieces that seal those jacks.

CN106453754B-patent-drawing

15. Mobile Phone Case with Sealing Strip, Sliding Charging Port Cover, and Lens Protector

DONGGUAN GEWALA COMMUNICATION TECH CO LTD, DONGGUAN GEWALA COMMUNICATION TECHNOLOGY CO LTD, 2022

Waterproof mobile phone case that provides complete protection against water damage without impeding phone functionality. The case has a bottom shell that fits around the phone's sides and back. It has a sealing strip on the top edge to cover the phone's top. The bottom shell attaches to a top shell. The bottom shell also has a sliding charging port cover and lens protector. This design allows the phone to be fully enclosed in the sealed case for waterproofing, while still allowing access to the screen and charging port.

CN217307735U-patent-drawing

16. Modular Protective Enclosure with Couplable Portions for Waterproof and Shockproof Sealing

Otter Products, LLC, 2022

Protective enclosure for encasing an object (e.g., electronic device) to protect it from environmental conditions, mishandling, and damage like contact with water. The enclosure has two or more portions that can be coupled together to form a waterproof seal and shockproof structure around the enclosed object.

17. Mobile Phone Enclosure with Soft Covers and Hard Material Waterproof Seal

SHENZHEN ART COLOR SCIENCE AND TECH LIMITED CO, SHENZHEN ART COLOR SCIENCE AND TECHNOLOGY LIMITED CO, 2022

Waterproof case for protecting mobile phones from water damage. The case has a face cover, back cover, and waterproof seal. The face and back covers are made of soft material and fit together to enclose the phone. The waterproof seal has a hard material and connects to the soft covers to form a sealed cavity for the phone. This provides better water resistance compared to just using a soft waterproof ring around the edges. The case also has a perforated area for attaching a rope to hang the phone or wear it around the neck.

18. Silicone Mobile Phone Case with Integrated Sealing Strips, Waterproof Valves, and Deformable Edge

SHENZHEN DAIXINLONG ELECTRONIC SCIENCE AND TECH CO LTD, SHENZHEN DAIXINLONG ELECTRONIC SCIENCE AND TECHNOLOGY CO LTD, 2022

A silicone mobile phone case with waterproofing capabilities to prevent water ingress and damage to the phone. The case has features like sealing strips around the camera and charging ports, waterproof valves on the volume buttons, and a deformable rubber edge. This allows the case to tightly seal around the phone when submerged or splashed with water. The valves prevent water from entering the phone's speaker or volume buttons, and the deformable edge compensates for case shrinkage. The charging port seal is flexible to extend into the phone's charging port for charging.

CN216625796U-patent-drawing

19. Modular Waterproof Mobile Phone Case with Interchangeable Covers and Rotating Charging Access

DONGGUAN DEEP SEA SPORTS GOODS LIMITED CO, DONGGUAN DEEP SEA SPORTS GOODS LTD CO, 2022

A universal waterproof case for protecting and operating mobile phones in wet environments. The case has interchangeable face and bottom covers, suction cups, a sealing ring, a rotating charging cover, and a transparent touch screen sheet. The bottom cover has suction cups and a fixed lens. The face cover has openings for hanging, cards, and charging. The user can separate the covers, attach the device to the suction cups, adjust the lens position, then join the covers for waterproof operation. The rotating charging cover allows access to the port. The modular design enables customization and fitting phones of different sizes.

CN216391124U-patent-drawing

20. Mobile Phone Waterproof Structure with Charging Port Cover and Corner Protection

GUANGDONG MORNING COMMUNICATION CO LTD, 2022

Waterproof structure for mobile phones that protects the charging port and corners from water ingress while also providing drop protection. The structure involves a waterproof cover for the charging jack and corner protectors. The jack cover has a fixed block inside with a waterproof mechanism. The mechanism has a clamped waterproof block with a fixed rubber plug. The block has equidistant lifting blocks on one side. The corners have protective rubber blocks fixed to the case. The rubber blocks have internal cavities with fixed plates. Between the plates are rubber splints with springs. The case has mounting holes for a removable carrying assembly.

21. Portable Waterproof Mobile Phone Case with Removable Bottom Cover, Suction Cup Inner Support, and One-Way Valve System

22. Waterproof Mobile Phone Case with Detachable Adsorption Carbon Pack System

23. Mobile Phone Case with Hinged Cover, Waterproof Plugs, and Buoyant Arced Block Mechanism

24. Waterproof Mobile Phone Case with Integrated Metal Back Shell, Reinforcing Ribs, and Removable Buckle System

25. Waterproof Mobile Phone Case with Detachable Snap-Fit Components and Integrated Sealing Mechanism

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A variety of technological advancements in the field of waterproof smartphone cases are demonstrated by these patents. The previously described techniques overcome challenges by employing strong and transparent materials, adding functions that simplify the use of the gadget, and producing leak-proof sealing without sacrificing functionality.