Tohru Yokota

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Koriyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for the preparation of vitrified silica particles
- Patent number 6,296,826
- Issue date Oct 2, 2001
- Shin-Etsu Quartz Products Co., Ltd.
- Akira Fujinoki
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
High purity opaque silica glass
- Patent number 5,977,000
- Issue date Nov 2, 1999
- Shin-Etsu Quartz Products Co., Ltd.
- Tatsuhiro Sato
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Process for producing opaque silica glass
- Patent number 5,772,714
- Issue date Jun 30, 1998
- Shin-Etsu Quartz Products Co., Ltd.
- Tatsuhiro Sato
- C03 - GLASS MINERAL OR SLAG WOOL