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Shigeji Obayashi
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Akashi, JP
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last 30 patents
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Patent Grant
Water retention material with water-absorbency
Patent number
5,075,373
Issue date
Dec 24, 1991
Seitetsu Kagaku Co., Ltd.
Shinichi Takemori
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Water-absorbent resin composition
Patent number
4,972,019
Issue date
Nov 20, 1990
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for producing a water-absorbent resin
Patent number
4,880,888
Issue date
Nov 14, 1989
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Water-absorbent resin composition
Patent number
4,863,989
Issue date
Sep 5, 1989
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for granulating a water-absorbent resin employing (a) water...
Patent number
4,732,968
Issue date
Mar 22, 1988
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for producing a water-absorbent resin
Patent number
4,683,274
Issue date
Jul 28, 1987
Seitetsu Kagaku Co., Ltd.
Morio Nakamura
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Water-swellable elastomer composition
Patent number
4,590,227
Issue date
May 20, 1986
Seitetsu Kagaku Co., Ltd.
Morio Nakamura
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Water-absorbent resin having improved water-absorbency and improved...
Patent number
4,541,871
Issue date
Sep 17, 1985
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Water-absorbent resin having improved water-absorbency and improved...
Patent number
4,507,438
Issue date
Mar 26, 1985
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Alkali metal acrylate or ammonium acrylate polymer excellent in sal...
Patent number
4,340,706
Issue date
Jul 20, 1982
Seitetsu Kagaku Co., Ltd.
Shigeji Obayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...