Qinghai Jin

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Edmonton, CA

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Patents Grantslast 30 patents

Information Patent Grant
Hinge assembly
- Patent number 11,718,514
- Issue date Aug 8, 2023
- Marthinus H. Doman
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Grant
Seal member
- Patent number 11,480,249
- Issue date Oct 25, 2022
- Marthinus Hendrik Doman
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
SEAL MEMBER
- Publication number 20230167903
- Publication date Jun 1, 2023
- Marthinus Hendrik Doman
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
HINGE ASSEMBLY
- Publication number 20220267132
- Publication date Aug 25, 2022
- Marthinus H. Doman
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
Information Patent Application
SEAL MEMBER
- Publication number 20210396317
- Publication date Dec 23, 2021
- Marthinus Hendrik Doman
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...