Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Cyclopentanohydrophenanthrene ring system doai
Reexamination Certificate
2006-12-12
2006-12-12
Badio, Barbara P. (Department: 1617)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Cyclopentanohydrophenanthrene ring system doai
C552S648000
Reexamination Certificate
active
07148212
ABSTRACT:
The process for making steroid crystals having a predetermined average particle size of from 1 μm to 25 μm and a maximum particle size that does not exceed a predetermined maximum value of 100 μm, includes subjecting a supersaturated solution containing a steroid to a wet milling by wet milling apparatus while crystallizing, in order to obtain a primary particle suspension. Crystals obtained according to this process and pharmaceutical preparations containing them are also described.
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Eichardt Annette
Gerecke Hagen
Gliesing Sabine
Grawe Detlef
Hoesel Peter
Badio Barbara P.
Schering AG
Striker Michael J.
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