Yuuji Washio

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Chuo-ku, JP

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Patents Grantslast 30 patents

Information Patent Grant
Amorphous silica particles having a double structure, process for p...
- Patent number 6,342,193
- Issue date Jan 29, 2002
- Mizusawa Industrial Chemicals A.S.
- Masanori Tanaka
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Amorphous silica particles having a double structure, process for p...
- Patent number 6,159,277
- Issue date Dec 12, 2000
- Mizusawa Industrial Chemicals Ltd.
- Masanori Tanaka
- C01 - INORGANIC CHEMISTRY