Koichi Orii

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing silica having a low silanol content
- Patent number 5,202,104
- Issue date Apr 13, 1993
- Nitto Chemical Industry Co., Ltd.
- Naotake Watanabe
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for producing unsintered cristobalite particles
- Patent number 5,154,905
- Issue date Oct 13, 1992
- Nitto Chemical Industry Co., Ltd.
- Iwao Ohshima
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method of manufacturing spherical silica particles
- Patent number 5,028,360
- Issue date Jul 2, 1991
- Nitto Chemical Industries Co., Ltd.
- Yuziro Ito
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing unsintered cristobalite silica
- Patent number 4,853,198
- Issue date Aug 1, 1989
- Nitto Chemical Industry Co., Ltd.
- Koichi Orii
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for manufacturing high purity silica
- Patent number 4,683,128
- Issue date Jul 28, 1987
- Nitto Chemical Industry Co., Ltd.
- Koichi Orii
- C01 - INORGANIC CHEMISTRY