Yanhong GUO

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Zhengzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Copper-phosphorus brazing wire for brazing copper alloy spectacle f...
- Patent number 12,103,113
- Issue date Oct 1, 2024
- ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD
- Yafang Cheng
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
COPPER-TIN-NICKEL BRAZING MATERIAL PREPARED BY ALLOYS RECYCLED FROM...
- Publication number 20240068069
- Publication date Feb 29, 2024
- ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
- Weimin LONG
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Copper-Phosphorus Brazing Wire for Brazing Copper Alloy Spectacle F...
- Publication number 20230405732
- Publication date Dec 21, 2023
- ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
- Yafang CHENG
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR