Jianghua YAN

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Pipe connector assembly and tire maintenance apparatus having same
- Patent number 11,904,817
- Issue date Feb 20, 2024
- ACTIVE TOOLS INTERNATIONAL (HK) LTD.
- Koonfung Lam
- B60 - VEHICLES IN GENERAL
Information Patent Grant
One-way valve, and tire repair sealant bottle having same
- Patent number 11,292,658
- Issue date Apr 5, 2022
- ACTIVE TOOLS INTERNATIONAL (HK) LTD.
- Koon Fung Lam
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
PIPE CONNECTOR ASSEMBLY AND TIRE MAINTENANCE APPARATUS HAVING SAME
- Publication number 20220126795
- Publication date Apr 28, 2022
- ACTIVE TOOLS INTERNATIONAL (HK) LTD.
- Koonfung LAM
- B60 - VEHICLES IN GENERAL
Information Patent Application
ONE-WAY VALVE, AND TIRE REPAIR SEALANT BOTTLE HAVING SAME
- Publication number 20200346845
- Publication date Nov 5, 2020
- ACTIVE TOOLS INTERNATIONAL (HK) LTD.
- Koon Fung LAM
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL