Flexible collapsible blood freezing containers
US4112989A · kind A · utility
32Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1975 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Nov 6, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1345
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Improved, flexible, collapsible containers are provided for the storage of frozen blood and the like at cryogenic temperatures. The containers are defined by plastic walls consisting essentially of a biaxially-oriented ethylene-vinyl acetate copolymer containing from ten to thirty-five percent by weight of vinyl acetate units. The container wall thickness is typically from 0.01 to 0.025 inch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.