Process and container for freeze drying under sterile conditions
US5309649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Sep 3, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2202/181
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.