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. 29, 2001
Filed:
Jul. 27, 1999
Applicant:
Inventor:
Karsten Cremer, Bonn, DE;
Assignee:
LTS Lohmann Therapie-Systeme GmbH, Neuwied, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/24 ; A61K 9/26 ; A61K 9/28 ;
U.S. Cl.
CPC ...
A61K 9/24 ; A61K 9/26 ; A61K 9/28 ;
Abstract
An oral preparation, comprising at least one pharmaceutical active compound in a matrix which is swellable in aqueous medium, which is released from the matrix into the aqueous medium in a delayed manner on swelling thereof, while the matrix is largely resistant to disintegration during the release process, it is characterized in that it is a layered tablet with layers adhering to one another, of which at least one layer is the swellable matrix layer and at least another layer is an auxiliary and/or excipient layer, and in that the swellable matrix layer contains an amount of crosslinked amylose.