Film preparation for biphasic release of pharmacologically...

Details Film preparation for biphasic release of pharmacologically... Film preparation for biphasic release of pharmacologically...

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.

REFERENCES:
patent: 4765983 (1988-08-01), Takayanagi et al.
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

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