The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1994
Filed:
Sep. 03, 1992
Thomas Bergmann, Penzberg, DE;
Herbert Brustmann, Tutzing, DE;
Boehringer Mannheim GmbH, Mannheim-Waldhof, DE;
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 vapor-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 vapor-permeable membrane.