Pharmaceutical delivery system
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Jul 14, 1992
Grant Date -
N/A
app pub date -
Aug 4, 1989
filing date -
Aug 16, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully