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:
Feb. 21, 2017
Filed:
Mar. 09, 2015
Applicant:
Depomed, Inc., Newark, CA (US);
Inventors:
Assignee:
DEPOMED, INC., Newark, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/20 (2006.01); A61K 9/24 (2006.01); A61K 31/00 (2006.01); A61K 45/06 (2006.01); A61K 31/155 (2006.01); A61K 31/40 (2006.01); A61K 31/4015 (2006.01); A61K 31/4415 (2006.01); A61K 9/28 (2006.01); A61K 9/00 (2006.01);
U.S. Cl.
CPC ...
A61K 9/209 (2013.01); A61K 9/2027 (2013.01); A61K 9/2031 (2013.01); A61K 9/2054 (2013.01); A61K 9/2077 (2013.01); A61K 9/2853 (2013.01); A61K 31/00 (2013.01); A61K 31/155 (2013.01); A61K 31/40 (2013.01); A61K 31/4015 (2013.01); A61K 31/4415 (2013.01); A61K 45/06 (2013.01); A61K 9/0065 (2013.01);
Abstract
Drug tablets that include a prolonged-release core and an immediate-release layer or shell are prepared with a thin barrier layer of drug-free polymer between the prolonged-release and immediate-release portions of the tablet. The barrier layer is penetrable by gastrointestinal fluid, thereby providing full access of the gastrointestinal fluid to the prolonged-release core, but remains intact during the application of the immediate-release layer, substantially reducing or eliminating any penetration of the immediate-release drug into the prolonged-release portion.