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:
Jul. 17, 2001
Filed:
Oct. 16, 2000
Applicant:
Inventors:
Ralf Maassen, Hanau, DE;
Steffen Krill, Speyer, DE;
Barbara Jäger, Freigericht, DE;
Klaus Huthmacher, Gelnhausen, DE;
Assignee:
Degussa AG, Düsseldorf, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 4/500 ; C07C 4/9105 ;
U.S. Cl.
CPC ...
C07C 4/500 ; C07C 4/9105 ;
Abstract
Process for the preparation of 2,3,5-trimethyl-p-benzoquinone by oxidizing 2,3,5-trimethylphenol or 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas mixture in the presence of a catalyst system which can be a copper halide and a transition metal halide; for example iron, chromium, manganese, cobalt, nickel, zinc or a rare earth halide, in a two-phase reaction medium, at elevated temperature.
Maassen, Ralf. (2001). Process for the preparation of 2,3,5-trimethyl-p-benzoquinone (U.S. Patent No. 6262311). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6262311
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile