DUNG-CHANG YEH

Person

New Taipei, TW

People

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
Information Patent Grant
Powder feed for injection molding process and method for manufactur...
- Patent number 10,780,499
- Issue date Sep 22, 2020
- Champ Tech Optical (Foshan) Corporation
- Jin-Hong Zhu
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Powder injection molding feedstock and method for manufacturing the...
- Patent number 10,434,571
- Issue date Oct 8, 2019
- Champ Tech Optical (Foshan) Corporation
- Dung-Chang Yeh
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
POWDER FEED FOR INJECTION MOLDING PROCESS
- Publication number 20200368819
- Publication date Nov 26, 2020
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- JIN-HONG ZHU
- B22 - CASTING POWDER METALLURGY
Information Patent Application
METHOD OF MAKING STAINLESS STEEL
- Publication number 20200291497
- Publication date Sep 17, 2020
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- DUNG-CHANG YEH
- C21 - METALLURGY OF IRON
Information Patent Application
POWDER FEED FOR INJECTION MOLDING PROCESS AND METHOD FOR MANUFACTUR...
- Publication number 20200164434
- Publication date May 28, 2020
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- JIN-HONG ZHU
- B22 - CASTING POWDER METALLURGY
Information Patent Application
POWDER INJECTION MOLDING FEEDSTOCK
- Publication number 20190366430
- Publication date Dec 5, 2019
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- DUNG-CHANG YEH
- B22 - CASTING POWDER METALLURGY
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
Information Patent Application
POWDER INJECTION MOLDING FEEDSTOCK AND METHOD FOR MANUFACTURING THE...
- Publication number 20190039132
- Publication date Feb 7, 2019
- CHAMP TECH OPTICAL (FOSHAN) CORPORATION
- DUNG-CHANG YEH
- B22 - CASTING POWDER METALLURGY

DUNG-CHANG YEH

Person

Patents Grantslast 30 patents

Method for manufacturing metal product with two blanks

Powder feed for injection molding process and method for manufactur...

Powder injection molding feedstock and method for manufacturing the...

Patents Applicationslast 30 patents

POWDER FEED FOR INJECTION MOLDING PROCESS

METHOD OF MAKING STAINLESS STEEL

POWDER FEED FOR INJECTION MOLDING PROCESS AND METHOD FOR MANUFACTUR...

POWDER INJECTION MOLDING FEEDSTOCK

METHOD FOR MANUFACTURING METAL PRODUCTS HAVING IRREGULAR SHAPES

METHOD FOR MANUFACTURING METAL PRODUCTS OF IRREGULAR SHAPE

POWDER INJECTION MOLDING FEEDSTOCK AND METHOD FOR MANUFACTURING THE...