Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Matrices
Reexamination Certificate
2006-05-02
2006-05-02
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Matrices
Reexamination Certificate
active
07037526
ABSTRACT:
A polymer-based preparation in film form for biphasic release of substances present therein to liquid surroundings, is characterized in that the preparation comprises at least two polymer matrix layers which differ in terms of their construction from polymers, with release taking place rapidly from one of the layers, and release taking place slowly from at least one other layer.
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patent: 5085865 (1992-02-01), Nayak
patent: 5393528 (1995-02-01), Staab
patent: 5681583 (1997-10-01), Conte et al.
patent: 6294200 (2001-09-01), Conte et al.
patent: WO 96/41617 (1996-12-01), None
Krumme Markus
Ludwig Karin
Birch & Stewart Kolasch & Birch, LLP
Howard Sharon
LTS Lohmann Therapie-Syteme AG
Page Thurman K.
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