A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/164
A61K 9/22 (2006.01) A61K 9/28 (2006.01) A61K 9/48 (2006.01) A61K 31/55 (2006.01)
Patent
CA 1126156
Abstract A pharmaceutical preparation in retard form com- prising a core containing at least one active substance in association with a carrier or excipient, the said core being provided with a semi-permeable diffusion coating comprising from 20 to 90% by weight of a water-insoluble film former and from 10 to 80% by weight of a water-soluble polymer wherein the release rate is substantially pH independent over the whole period of activity of the active substance therein.
331894
Arndts Dietrich
Bechtel Wolf D.
Bozler Gerhard
Brickl Rolf
Darda Siegfried
Boehringer Ingelheim G.m.b.h.
Fetherstonhaugh & Co.
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