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:
Nov. 03, 1981
Filed:
Nov. 29, 1979
Applicant:
Inventors:
Thomas M Parkinson, Palo Alto, CA (US);
Joseph P Brown, Palo Alto, CA (US);
Robert E Wingard, Jr, Palo Alto, CA (US);
Assignee:
Dynapol, Palo Alto, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424 78 ;
Abstract
An intestinal anti-inflammatory preparation comprising a polymeric agent for releasing 5-aminosalicylic acid or its salts is disclosed. The polymeric agent comprises a nonabsorbable pharmacologically acceptable organic polymer backbone containing aromatic rings to which are covalently bonded via azo bonds a plurality of salicylic acid or salicylate salt groups. The azo bonds attach to the salicylates' 5-position carbon. The polymer's azo bonds undergo bacterial cleavage in the mammalian lower bowel to release 5-aminosalicylic acid and/or its salts.