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Shin-Ichi Isaoka
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Minoo, JP
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last 30 patents
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Patent Grant
Amphoteric polyelectrolyte
Patent number
4,251,651
Issue date
Feb 17, 1981
Sumitomo Chemical Company, Limited
Shigenao Kawakami
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Method of hydrolyzing acrylamide and methacrylamide polymers
Patent number
4,221,888
Issue date
Sep 9, 1980
Sumitomo Chemical Company, Limited
Shigenao Kawakami
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for promoting growth of plants with cationic polymers
Patent number
4,164,413
Issue date
Aug 14, 1979
Sumitomo Chemical Company, Ltd.
Naoyoshi Jinno
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Patent Grant
Water-soluble high polymers and their preparation
Patent number
4,138,446
Issue date
Feb 6, 1979
Sumitomo Chemical Company, Limited
Shigenao Kawakami
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...