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:
May. 12, 1992
Filed:
Jul. 26, 1990
Applicant:
Inventors:
Howard Stevens, Grande-Bretagne, GB;
Maryvonne Chariot, Maisons-Alfort, FR;
Francoise Arnold, Plainsboro, NJ (US);
Gareth Lewis, Dourdan, FR;
Assignee:
Synthelabo, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
424497 ; 424458 ; 424461 ; 424462 ; 424465 ; 424480 ; 424482 ; 424495 ; 427-3 ;
Abstract
A sustained-release pharmaceutical composition which comprises microparticles comprising an active principle, said microparticles being coated with a coating mixture comprising ethyl cellulose and an acrylic resin which is a polymerizate of acrylic and methacrylic ester, having a molecular weight of at least 100,000 and comprising units of formula: ##STR1## wherein: R.sub.1 is hydrogen or methyl,