Toshikatu Matsuya

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Patents Grantslast 30 patents

Information Patent Grant
Optical members and blanks of synthetic silica glass and method for...
- Patent number 5,325,230
- Issue date Jun 28, 1994
- Shin-Etsu Quartz Products Co., Ltd.
- Shigeru Yamagata
- G02 - OPTICS
Information Patent Grant
Optical members and blanks or synthetic silica glass and method for...
- Patent number 5,086,352
- Issue date Feb 4, 1992
- Shin-Etsu Quartz Products Co., Ltd.
- Shigeru Yamagata
- G02 - OPTICS