Toshihiro Okon

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Joetsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for the preparation of methyl chloride from carbon tetrachlo...
- Patent number 5,196,618
- Issue date Mar 23, 1993
- Shin-Etsu Chemical Co., Ltd.
- Toshihiro Okon
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process of preparing surface-modified polymethylsilsesquioxane sphe...
- Patent number 5,149,748
- Issue date Sep 22, 1992
- Shin-Etsu Chemical Co., Ltd.
- Takaaki Shimizu
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing fine spherical silica
- Patent number 4,842,837
- Issue date Jun 27, 1989
- Shin-Etsu Chemical Co., Ltd.
- Takaaki Shimizu
- B82 - NANO-TECHNOLOGY