Itsuko Hamaguchi

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vinylpyrrolidone-based polymer composition
- Patent number 7,700,674
- Issue date Apr 20, 2010
- Nippon Shokubai Co., Ltd.
- Keiichi Fujise
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing high-purity vinylpyrrolidone polymer
- Patent number 6,486,281
- Issue date Nov 26, 2002
- Dai-Ichi Kogyo Seiyaku Co., Ltd.
- Akira Kitada
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for preparing vinylpyrrolidone polymer
- Patent number 6,465,592
- Issue date Oct 15, 2002
- Dai-Ichi Kogyo Seiyaku Co., Ltd.
- Akira Kitada
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Vinylpyrrolidone-based polymer composition
- Publication number 20080033081
- Publication date Feb 7, 2008
- Keiichi Fujise
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PREPARING VINYLPYRROLIDONE POLYMER
- Publication number 20020173608
- Publication date Nov 21, 2002
- Akira Kitada
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...