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Last Updated: December 16, 2025

Claims for Patent: RE33994

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Summary for Patent: RE33994

Title:	Pharmaceutical delivery system
Abstract:	A composition for use in an aqueous environment which .[.comprise.]. .Iadd.comprises .Iaddend.a formulation containing a water-soluble pharmaceutically beneficial agent, a water-insoluble, water-permeable film coating surrounding the formulation, and particulate, water-soluble, pore-forming material dispersed within the film coating. The questions raised in reexamination request No. 90/001,344, filed Oct. 5, 1987, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).
Inventor(s):	Richard W. Baker, James W. Brooke
Assignee:	SmithKline Beecham Corp, ATK Launch Systems LLC
Application Number:	US07/390,518
Patent Claims:

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