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:
Jun. 25, 2002
Filed:
Mar. 08, 2001
Applicant:
Inventors:
Assignee:
Degussa-Huls Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 4/500 ; C07C 4/9105 ;
U.S. Cl.
CPC ...
C07C 4/500 ; C07C 4/9105 ;
Abstract
A process for the preparation of 2,3,5-trimethyl-p-benzoquinone by oxidation of 2,3,5- or 2,3,6-trimethylphenol using oxygen or a gas mixture containing oxygen in the presence of a two-phase liquid reaction medium composed of water and a neocarboxylic acid having to 11 carbon atoms with a copper (II) halide-containing catalyst system at elevated temperature.
Maassen, Ralf. (2002). Process for the preparation of 2,3,5-trimethy1-p-benzoquinone (U.S. Patent No. 6410798). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6410798
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile