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Masao Kubo
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Tokyo, JP
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last 30 patents
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Patent Grant
Process for producing high-purity silica by reacting crude silica w...
Patent number
5,458,864
Issue date
Oct 17, 1995
Nissan Chemical Industries Ltd.
Makoto Tsugeno
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for producing high-purity silica by reacting crude silica w...
Patent number
5,266,289
Issue date
Nov 30, 1993
Nissan Chemical Industries Ltd.
Makoto Tsugeno
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Silica particles and process for producing the same
Patent number
5,230,953
Issue date
Jul 27, 1993
Nissan Chemical Industries Ltd.
Makoto Tsugeno
C01 - INORGANIC CHEMISTRY