Takafumi Yokoyama

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Funabashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process of producing hydrophobic organosilica sol
- Patent number 6,025,455
- Issue date Feb 15, 2000
- Nissan Chemicals Industries, Ltd.
- Keiko Yoshitake
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of preparing a propanol sol of silica
- Patent number 5,902,226
- Issue date May 11, 1999
- Nissan Chemical Industries, Ltd.
- Keiko Tasaki
- C01 - INORGANIC CHEMISTRY