Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Reexamination Certificate
2001-06-05
2008-08-19
Hartley, Michael G. (Department: 1618)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
C424S470000, C424S486000, C424S489000, C424S494000, C424S497000
Reexamination Certificate
active
07413750
ABSTRACT:
The present invention relates to a process for producing solid oral dosage forms with sustained release of active ingredient, comprising at least one active ingredient, a preformulated mixture of polyvinyl acetate and polyvinylpyrrolidone, where appropriate, water-soluble polymers or lipophilic additives and, where appropriate, other conventional excipients, wherein this mixture or parts of this mixture are granulated by heating to from 40° C. to 130° C., and the granules are, after admixture with conventional excipients, subsequently tabletted.
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Ascherl Hermann
Flick Dieter
Kolter Karl
BASF - Aktiengesellschaft
Fubara Blessing M
Hartley Michael G.
Novak Druce & Quigg LLP
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