Hidetoshi Wakamatsu

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Yamaguchi-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ultraviolet ray-transparent optical glass material and method of pr...
- Patent number 6,376,401
- Issue date Apr 23, 2002
- Tosoh Corporation
- Shinichi Kondo
- C03 - GLASS MINERAL OR SLAG WOOL