Katsuhiko Kemmochi

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Kouriyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
High-purity quartz glass and method for the preparation thereof
- Patent number 5,968,259
- Issue date Oct 19, 1999
- Shin-Etsu Quartz Products Co., Ltd.
- Katsuhiko Kemmochi
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for the analysis of impurity contents in silicon dioxide
- Patent number 5,877,027
- Issue date Mar 2, 1999
- Shin-Etsu Quartz Products Co., Ltd.
- Katsuhiko Kemmochi
- G01 - MEASURING TESTING