Eiji Ogata

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Wakayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing high-purity 4,4′-dihydroxydiphenyl sulfone
- Patent number 7,456,321
- Issue date Nov 25, 2008
- Konishi Chemical Ind. Co., Ltd.
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfonating agent and sulfonation process
- Patent number 5,596,128
- Issue date Jan 21, 1997
- Konishi Chemical Ind. Co., Ltd.
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparation of 4,4'-dihydroxydiphenylsulfone
- Patent number 5,241,121
- Issue date Aug 31, 1993
- Konishi Chemical Ind. Co., Ltd.
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparation of 4,4'-dihydroxydiphenylsulfone
- Patent number 5,189,223
- Issue date Feb 23, 1993
- Konishi Chemical Ind. Co., Ltd.
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for purifying 4,4'-dihydroxydiphenylsulfone
- Patent number 5,097,074
- Issue date Mar 17, 1992
- Konishi Chemical Industry, Limited
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 4,4'-dihydroxydiphenyl sulfone having high pu...
- Patent number 4,820,831
- Issue date Apr 11, 1989
- Konishi Chemical Industry Co., Ltd.
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing halo-substituted diarylsulfones
- Patent number 4,558,161
- Issue date Dec 10, 1985
- Konishi Chemical Industry Co., Ltd.
- Yukichi Morita
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 4,4'-dihydroxydiphenylsulfone of high purity
- Patent number 4,162,270
- Issue date Jul 24, 1979
- Konishi Chemical Industry Co., Ltd.
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for producing high-purity 4,4'-dihydroxydiphenyl sulfone
- Publication number 20050272956
- Publication date Dec 8, 2005
- Eiji Ogata
- C07 - ORGANIC CHEMISTRY

Person

Patents Grantslast 30 patents

Process for producing high-purity 4,4′-dihydroxydiphenyl sulfone

Sulfonating agent and sulfonation process

Process for preparation of 4,4'-dihydroxydiphenylsulfone

Process for preparation of 4,4'-dihydroxydiphenylsulfone

Process for purifying 4,4'-dihydroxydiphenylsulfone

Process for preparing 4,4'-dihydroxydiphenyl sulfone having high pu...

Process for preparing halo-substituted diarylsulfones

Process for producing 4,4'-dihydroxydiphenylsulfone of high purity

Patents Applicationslast 30 patents

Process for producing high-purity 4,4'-dihydroxydiphenyl sulfone