Multi-layer delivery system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 17, 1989
Grant Date -
N/A
app pub date -
Jun 25, 1987
filing date -
Jun 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dispenser for use in a fluid environment having a rigid housing containing a fluid activated driving member, a plurality of drug containing layers and an outlet means by which drug is dispensed to the environment. The housing adjacent to the layers is fluid impermeable and the housing adjacent to the driving member is fluid permeable or has an open area by which fluid can contact the driving member. O048743884
First Claim
Family
International Classification(s)
Cited Art Landscape
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