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. 28, 1985
Filed:
Aug. 30, 1983
Applicant:
Inventors:
Chao-Yang Hsu, Media, PA (US);
James E Lyons, Wallingford, PA (US);
Assignee:
Sun Tech, Inc., Philadelphia, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2603 / ;
Abstract
Phenol or a substituted phenol is oxidized to the corresponding benzoquinone or substituted benzoquinone in a nitroalkane solvent in the presence of a copper ion catalyst promoted with a base selected from alkali metal phenoxides, and secondary or tertiary lower alkyl amines.