Toyozo Otsuka

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Kamifukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of refining silicon tetrafluoride gas
- Patent number 4,457,901
- Issue date Jul 3, 1984
- Central Glass Company, Limited
- Naomichi Kitsugi
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process of preparing silicon tetrafluoride by using hydrogen fluori...
- Patent number 4,382,071
- Issue date May 3, 1983
- Central Glass Company, Limited
- Toyozo Otsuka
- C01 - INORGANIC CHEMISTRY