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:
Jun. 25, 1991
Filed:
Jun. 07, 1988
Applicant:
Inventors:
Richard J Harwood, Bensalem, PA (US);
Gunvant N Mehta, Lansdale, PA (US);
Ramesh C Jhawar, Yardley, PA (US);
Liang-Lii Huang, Maple Glen, PA (US);
Wayne M Grim, Doylestown, PA (US);
Shun P Li, Upper Darby, PA (US);
Assignee:
Rorer Pharmaceutical Corporation, Fort Washington, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01N / ; A01K / ;
U.S. Cl.
CPC ...
514263 ; 424468 ; 424480 ; 514826 ;
Abstract
A method for the preparation of a sustained release pharmaceutical composition comprising forming a fluidized ring of said particles and contacting said particles maintained suspended in said ring with a liquid composition containing a pharmaceutically active material and an alkali-soluble material.