Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Patent
1992-09-25
1997-03-18
Venkat, Jyothsna
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
424461, 424462, 424480, 424482, 424494, 424497, A61K 962
Patent
active
056120591
ABSTRACT:
A device for controlled release of an active substance through one or more asymmetric membranes by diffusion and/or osmotic pumping.
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Cardinal John R.
Herbig Scott M.
Korsmeyer Richard W.
Lo Jeelin
Smith Kelly L.
Benson Gregg C.
Olson A. Dean
Pfizer Inc.
Richardson Peter C.
Venkat Jyothsna
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