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. 22, 1988
Filed:
May. 18, 1987
Applicant:
Inventors:
Richard Chang, Miramar, FL (US);
Robert P Giannini, Plantation, FL (US);
Charles Hsaio, Cooper City, FL (US);
Assignee:
Schering Corporation, Kenilworth, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424490 ; 424491 ; 424494 ; 514263 ; 514962 ; 514964 ;
Abstract
A sustained release theophylline containing oral dosage formulation comprising theophylline containing micropellets coated with from about 0.5% to about 2% by weight of a pharmaceutically acceptable water-insoluble film former, preferably ethyl cellulose and having first order release. The formulation is an improvement over theophylline containing micropellets coated with two film formers which have zero order release. The oral dosage formulation has superior non-fasting release and absorption characteristics when compared to the zero order release formulation.