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:
May. 16, 1989
Filed:
Feb. 20, 1986
Applicant:
Inventors:
Yoshinori Saito, Ichikawa, JP;
Shinichi Araki, Tokyo, JP;
Yoshio Sugita, Chiba, JP;
Naoji Kurata, Nishinomiya, JP;
Assignees:
Nippon Shokubai Kagaku Kogyo Co. Ltd., Osaka, JP;
Nihon Jyoryu Kogyo Co., Ltd., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562408 ;
Abstract
A process for producing an aromatic dicarboxylic acid which comprises subjecting a 'K-region' arene to liquid phase oxidation with hydrogen peroxide in a water-insoluble organic solvent in the presence of a tungsten compound and a phase transfer catalyst and optionally a mineral acid.
Saito, Yoshinori. (1989). Process for producing aromatic dicarboxylic acids (U.S. Patent No. 4831189). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4831189
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile