Koichi Tsuchiya

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Saitama-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical glass for precision molding
- Patent number 7,141,525
- Issue date Nov 28, 2006
- Sumita Optical Glass, Inc.
- Yoshinori Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass for molding
- Patent number 6,784,128
- Issue date Aug 31, 2004
- Sumita Optical Glass, Inc.
- Masaaki Otsuka
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical glass for precision molding
- Patent number 6,333,282
- Issue date Dec 25, 2001
- Sumita Optical Glass, Inc.
- Koji Nakahata
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL GLASS AND OPTICAL ELEMENT
- Publication number 20200131072
- Publication date Apr 30, 2020
- Sumita Optical Glass, Inc.
- Koichi TSUCHIYA
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Optical glass for precision molding
- Publication number 20050192174
- Publication date Sep 1, 2005
- Sumita Optical Glass, Inc.
- Yoshinori Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Optical glass for molding
- Publication number 20030153450
- Publication date Aug 14, 2003
- Sumita Optical Glass, Inc.
- Masaaki Otsuka
- C03 - GLASS MINERAL OR SLAG WOOL