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:
Mar. 12, 1985
Filed:
Jul. 06, 1982
Applicant:
Inventors:
Dieter H Klaubert, Perkiomenville, PA (US);
Stanley C Bell, Narberth, PA (US);
Assignee:
American Home Products Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ;
U.S. Cl.
CPC ...
544163 ; 544395 ; 2604 / ; 546230 ; 548577 ;
Abstract
2,6-Diaminobenzonitriles, useful in the production of N-(2-cyano-3-substituted or unsubstituted amino-phenyl)oxamate and N-(2-cyano-3-substituted or unsubstituted amino-phenyl)tetrazole-5-carboxamide antiallergy and antisecretory agents, are prepared by sequential displacement of the fluoro substituents from 2,6-difluorobenzonitrile with the appropriately substituted amine.