Takashi Ohgami

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
High-purity silver wires for use in recording, acoustic or image tr...
- Patent number 6,627,149
- Issue date Sep 30, 2003
- Dowa Mining Co., Ltd.
- Kishio Tayama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
High purity gallium for preparation of compound semiconductor, and...
- Patent number 6,533,838
- Issue date Mar 18, 2003
- Dowa Mining Co., Ltd.
- Takeharu Yamamura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Apparatus for producing high-purity silver materials
- Patent number 6,444,164
- Issue date Sep 3, 2002
- Dowa Mining Co., Ltd.
- Kishio Tayama
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for producing high-purity silver materials
- Patent number 6,231,637
- Issue date May 15, 2001
- Dowa Mining Co., Ltd.
- Kishio Tayama
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
High purity gallium for producing compound semiconductor, refining...
- Publication number 20020162419
- Publication date Nov 7, 2002
- DOWA MINING CO., LTD.
- Takeharu Yamamura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Apparatus for producing high-purity silver materials
- Publication number 20010015113
- Publication date Aug 23, 2001
- DOWA MINING CO., LTD.
- Kishio Tayama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...