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:
Aug. 29, 1989
Filed:
Sep. 30, 1987
Applicant:
Inventors:
Assignee:
Proter S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424494 ; 424489 ; 424490 ; 424493 ; 424495 ; 424497 ; 424456 ;
Abstract
Several methods are disclosed for the preparation of oral pharmaceutical forms with delayed release of rhein and its derivatives. The pharmaceutically active ingredient is provided in the form of granules, coated with at least one of polyvinylpyrrolidone, shellac and hydroxypropylmethyl cellulose. The desired effect of the coating is to slow release of the pharmaceutically active ingredient by resisting gastric juices in the stomach, but gradually dissolving in the intestines.