PROCESS AND CONTAINER FOR FREEZE DRYING UNDER STERILE CONDITIONS - Patent Articles

(12) Patent: (11) CA 1337974
Application Number: (21) 600212
ABSTRACT:
The present invention provides a process for freeze drying of especially biologically or pharmaceutical material under sterile conditions, wherein the material to be dried is introduced into a container the sides of which consist at least partly of a hydrophobic, porous, micro-organism-impermeable, water vapour-permeable membrane, the container is tightly closed and the material is subsequently freeze dried in the closed container under the usual conditions.
The present invention also provides a container for freeze drying materials under sterile conditions, wherein the sides of the container consist at least partly of a hydrophobic, porous, germ-impermeable, water vapour-permeable membrane.
72) Inventors (Country): BERGMANN, THOMAS (Germany (Federal Republic of))
BRUSTMANN, HERBERT (Germany (Federal Republic of))
(73) Owners (Country): BOEHRINGER MANNHEIM GMBH (Germany (Federal Republic of))
(71) Applicants (Country):
(74) Agent: OGILVY RENAULT
(45) Issued: Jan. 23, 1996
(22) Filed: May 19, 1989
(41) Open to Public Inspection:
(52) Canadian Class (CPC): 195/141 167/322
(51) International Class (IPC): C12M 1/00
A01N 1/00
C12N 1/04
F26B 5/06
Patent Cooperation Treaty (PCT): No
(30) Application priority data: Application No. Country Date
P 38 17 906.7 Germany (Federal Republic of) May 26, 1988
Availability of licence: N/A
Language of filing: English