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:
Dec. 29, 1998
Filed:
Dec. 02, 1994
Applicant:
Inventor:
Karsten Cremer, Bonn, DE;
Assignee:
LTS Lohmann Therapie-Systeme GmbH & Co. KG, Neuwied, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ;
U.S. Cl.
CPC ...
424484 ; 424474 ; 514964 ; 71 6413 ;
Abstract
A device for the controlled release of active substances in liquid media from an active substance-containing matrix exhibiting active substance releasing-surfaces has, the active substance releasing surfaces of the matrix covered, at least partially, by an erodible mass of solids; the thickness of the erodible mass across its extent on the active substance releasing-areas is determined by gradients.