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:
Dec. 18, 1984
Filed:
Feb. 17, 1984
Applicant:
Inventors:
Patricia C Wang, Palo Alto, CA (US);
Daniel J Dawson, Los Altos, CA (US);
Assignee:
Dynapol, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5253282 ; 525374 ; 525383 ; 526287 ; 526316 ;
Abstract
Polymeric compounds which have recurring ##STR1## units, wherein X is N or O, R.sub.1, R.sub.2 and R.sub.3 are hydrogens or lower alkyls and R.sub.4 is ##STR2## and aromatic amine or an aromatic hydrazine which provides X as N. These polymers provide active methylene groups which serve as points of attachment for organic groups-particularly azo functionality-containing groups. These azo links can be cleaved by bacteria in the mammalian lower bowel, thereby releasing the corresponding amino groups. This mechanism can effect programmed delivery of pharmaceutically desirable species to the lower bowel.