The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1981
Filed:
Oct. 12, 1979
Applicant:
Inventors:
Hiroshi Hashizume, Kitakyushi, JP;
Sigeki Harada, Nakama, JP;
Assignee:
Mitsubishi Chemical Industries Ltd., Fujuoka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562487 ;
Abstract
Preparation of terephthalic acid by oxidizing p-xylene with molecular oxygen in an acetic acid solvent in the presence of a catalyst containing at least one heavy metal and bromine. Preparation of terephthalic acid of high purity accompanied by low level of combustion of the acetic acid solvent can be achieved by
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Hashizume, Hiroshi. (1981). Process for preparing terephthalic acid (U.S. Patent No. 4286101). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4286101
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile