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Himeji, JP
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last 30 patents
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Patent Grant
Method for inhibiting polymerization of (meth) acrylic acid and est...
Patent number
5,504,243
Issue date
Apr 2, 1996
Nippon Shokubai Co., Ltd.
Kazuhiko Sakamoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for inhibiting polymerization of (meth) acrylic acid and est...
Patent number
5,322,960
Issue date
Jun 21, 1994
Nippon Shokubai Co., Ltd.
Kazuhiko Sakamoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for purification of acrylic acid
Patent number
5,315,037
Issue date
May 24, 1994
Nippon Shokubai Co., Ltd.
Kazuhiko Sakamoto
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing pyromellitic acid and/or pyromellitic anhydride
Patent number
4,665,200
Issue date
May 12, 1987
Nippon Shokubai Kagaku Kogyo Co., Ltd.
Yoshiyuki Nakanishi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Catalyst for production of phthalic anhydride
Patent number
4,356,112
Issue date
Oct 26, 1982
Nippon Shukubai Kagaku Kogyo Co. Ltd.
Yoshiyuki Nakanishi
C07 - ORGANIC CHEMISTRY