Hiroshi Koya

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Silicon wafer, and heat treatment method of the same and the heat-t...
- Patent number 6,682,597
- Issue date Jan 27, 2004
- Mitsubishi Materials Silicon Corporation
- Hiroshi Koya
- C30 - CRYSTAL GROWTH
Information Patent Grant
Silicon wafer, and manufacturing method and heat treatment method o...
- Patent number 6,663,708
- Issue date Dec 16, 2003
- Mitsubishi Materials Silicon Corporation
- Etsuro Morita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Substrate for epitaxial growth
- Patent number 6,461,447
- Issue date Oct 8, 2002
- Mitsubish Denki Kabushiki Kaisha
- Hiroshi Shinyashiki
- C30 - CRYSTAL GROWTH
Information Patent Grant
Silicon wafer, and heat treatment method of the same and the heat-t...
- Patent number 6,428,619
- Issue date Aug 6, 2002
- Mitsubishi Materials Silicon Corporation
- Hiroshi Koya
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Method of manufacturing silicon
- Publication number 20040025983
- Publication date Feb 12, 2004
- Etsuro Morita
- C30 - CRYSTAL GROWTH
Information Patent Application
Silicon wafer, and heat treatment method of the same and the heat-t...
- Publication number 20030051660
- Publication date Mar 20, 2003
- Hiroshi Koya
- C30 - CRYSTAL GROWTH