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last 30 patents
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Patent Grant
Production method of pyromellitic acid and pyromellitic anhydride
Patent number
7,202,380
Issue date
Apr 10, 2007
Mitsubishi Gas Chemical Company, Inc.
Tatsuyuki Kumano
C07 - ORGANIC CHEMISTRY
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Patent Grant
Optically active compound, liquid crystal compositions containing t...
Patent number
5,840,209
Issue date
Nov 24, 1998
Mitsubishi Gas Chemical Company, Inc.
Hiroshi Mineta
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
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Patent Application
Production method of pyromellitic acid and pyromellitic anhydride
Publication number
20040143135
Publication date
Jul 22, 2004
Tatsuyuki Kumano
C07 - ORGANIC CHEMISTRY