Yijian Li

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Xiamen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Code wheel combination lock
- Patent number 12,320,152
- Issue date Jun 3, 2025
- Yijian Li
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Code changing structure applied to key coded lock
- Patent number 12,258,785
- Issue date Mar 25, 2025
- Yijian Li
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Combination lock
- Patent number 12,110,712
- Issue date Oct 8, 2024
- Yijian Li
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Code changing structure applied to key coded lock
- Publication number 20230212878
- Publication date Jul 6, 2023
- XIAMEN MAKE SECURITY TECHNOLOGY CO., LTD.
- Yijian LI
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
NOVEL CODE WHEEL COMBINATION LOCK
- Publication number 20230127631
- Publication date Apr 27, 2023
- XIAMEN MAKE SECURITY TECHNOLOGY CO., LTD.
- Yijian Li
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
COMBINATION LOCK
- Publication number 20230022564
- Publication date Jan 26, 2023
- XIAMEN MAKE SECURITY TECHNOLOGY CO., LTD.
- Yijian Li
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES