YI-FAN LIN

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Foshan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing metal product with two blanks
- Patent number 11,065,687
- Issue date Jul 20, 2021
- Champ Tech Optical (Foshan) Corporation
- Dung-Chang Yeh
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR MANUFACTURING METAL PRODUCTS HAVING IRREGULAR SHAPES
- Publication number 20190193162
- Publication date Jun 27, 2019
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- YI-FAN LIN
- B22 - CASTING POWDER METALLURGY
Information Patent Application
METHOD FOR MANUFACTURING METAL PRODUCTS OF IRREGULAR SHAPE
- Publication number 20190168307
- Publication date Jun 6, 2019
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- DUNG-CHANG YEH
- B22 - CASTING POWDER METALLURGY