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. 02, 1993
Filed:
Jul. 05, 1990
Applicant:
Inventors:
Milos Sovak, Rancho Santa Fe, CA (US);
Ramachandran Ranganathan, San Diego, CA (US);
Assignee:
Cook Imaging Corp., Bloomington, IN (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564153 ; 560 16 ; 548462 ;
Abstract
Methods are provided for substituting aromatic carboxylic acids and derivatives thereof and amino substituted aromatic carboxylic acids and derivatives thereof, by forming imides and imide-amides, respectively, by acylation with aliphatic carboxylic acids, substituting at least one nitrogen atom under mild basic conditions with an aliphatic compound having as alkylating agent a displaceable functionality and removing undesired acyl groups, as appropriate.