US Patent 7534912 Process for producing pyromellitic acid
Patent 7534912 was granted and assigned to Mitsubishi Gas Chemical Company on May, 2009 by the United States Patent and Trademark Office.
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Patent Inventor Names
Hiroshi Ogawa0
Shinichi Nagao0
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Patent abstract
A process for producing pyromellitic acid which comprises step A for oxidizing durene, thereby obtaining a reaction mixture comprising trimethyl benzoic acid, trimethyl benzyl alcohol and trimethyl benzaldehyde, step B for separating trimethyl benzoic acid, trimethyl benzaldehyde and trimethyl benzyl alcohol from the reaction mixture obtained in step A, and step C for oxidizing trimethyl benzoic acid and/or trimethyl benzaldehyde separated in step B, thereby obtaining pyromellitic acid.
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US Patent 07534912 Process for producing pyromellitic acid US Patent 7534912 Process for producing pyromellitic acid
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Patent Number
075349120
Patent Number
75349120
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Current Assignee
Patent Jurisdiction
Patent Number
075349120
Date of Patent
May 19, 2009
0Patent Application Number
109657700
Date Filed
October 18, 2004
0Official Website
Patent Primary Examiner
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US Patent 07534912 Process for producing pyromellitic acid
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07534912
Date of patent
May 19, 2009
Patent application number
10965770
Date Filed
October 18, 2004
Patent primary examiner
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