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Kazuyoshi Nagaki
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Chiba, JP
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last 30 patents
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Patent Grant
Process for preparation of polyphenylene-sulfide resins in the abse...
Patent number
5,071,949
Issue date
Dec 10, 1991
Tohpren Co., Ltd.
Yoshiaki Nakamura
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent Grant
Method for removing impurities from polyphenylene sulfide resin
Patent number
4,841,022
Issue date
Jun 20, 1989
Tohpren, Co., Ltd.
Yoshiaki Nakamura
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...