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Hideto Umekawa
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Kanagawa, JP
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last 30 patents
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Patent Grant
Alkenylsuccini acid emulsion sizing agent
Patent number
5,391,225
Issue date
Feb 21, 1995
Mitsubishi Oil Co., Ltd.
Hatanaka Shigeto
C07 - ORGANIC CHEMISTRY
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Patent Grant
Emulsified alkenylsuccinic acid sizing agent
Patent number
5,306,757
Issue date
Apr 26, 1994
Mitsubishi Oil Co., Ltd.
Shigeto Hatanaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Emulsified alkenylsuccinic acid sizing agent
Patent number
5,219,912
Issue date
Jun 15, 1993
Mitsubishi Oil Co., Ltd.
Yoshio Takahashi
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE