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:
Feb. 13, 2001
Filed:
Dec. 23, 1998
Applicant:
Inventors:
Donald L. Fields, Jr., Copley, OH (US);
Michael K. Stern, Clayton, MO (US);
Jayant Shivji Lodaya, Akron, OH (US);
Assignee:
Flexsys America L.P., Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 5/004 ;
U.S. Cl.
CPC ...
C07C 5/004 ;
Abstract
A hydroxydiphenylamine compound can be converted to an N-phenylquinoneimine by reacting the hydroxydiphenylamine with oxygen or an oxygen containing gas in the presence of a modified activated carbon catalyst, the catalyst having had surface oxides removed therefrom.
Fields, Jr., Donald. (2001). Preparation of n-phenyl-benzoquinoneimine from hydroxydiphenylamines (U.S. Patent No. 6187937). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6187937
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile