Process

Details Process Process

2007-05-08

2007-05-08

Woodward, Michael (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

Reexamination Certificate

active

10432469

ABSTRACT:
A wet granulation process in which a pharmaceutical substance is granulated using a granulating fluid which is a halogenated hydrocarbon which has a normal boiling point below ambient temperature, for example 1,1,1,2-tetraflouroethane, under a pressure sufficient to maintain the halogenated hydrocarbon in a liquid state. A process in which the halogenated hydrocarbon is re-cycled, and suitable equipment for performing the process is also described.

REFERENCES:
patent: 3885026 (1975-05-01), Heinemann et al.
patent: 4134943 (1979-01-01), Knitsch et al.
patent: 4792598 (1988-12-01), Ziegase
patent: 5082666 (1992-01-01), Rene et al.
patent: 5091565 (1992-02-01), Ziegast
patent: 5403593 (1995-04-01), Royce
patent: 2 604 901 (1988-04-01), None
patent: 07 265682 (1995-10-01), None

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