Tsutomu Koyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for forming a glass sheet
- Patent number 6,311,523
- Issue date Nov 6, 2001
- Asahi Glass Company Ltd.
- Gen Kojima
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for forming a glass sheet
- Patent number 6,101,845
- Issue date Aug 15, 2000
- Asahi Glass Company Ltd.
- Gen Kojima
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of laminating plastic film and shaped metal substrates
- Patent number 4,225,379
- Issue date Sep 30, 1980
- Asahi Glass Company, Limited
- Tsuneji Ishii
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL