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:
Apr. 12, 1988
Filed:
May. 29, 1987
Applicant:
Inventors:
Assignee:
Rohm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424487 ; 524547 ; 524555 ; 526287 ; 5262922 ; 52629295 ; 424497 ;
Abstract
Aqueous dispersions of a water-swellable but water-insoluble polymer formed between a quaternary ammonium monomer and a nonionic monomer; methods for making such dispersions by dispersing said copolymers, in the form of a powder, in water; methods for coating pharmaceutical cores, powders, or granules with such dispersions; and coated pharmaceutical products made by such methods.