Biodegradable cryogenic bag
US6655156B1 · kind B1 · utility
12Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Aug 28, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0509
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vessel for retaining cryogens in the form of a flexible liner for compliably retaining a cryogen and designed for controlled release of vapors generated by the cryogen. The improved flexible liner is biodegradable, with the incorporation of the biodegradable component within the resin being accomplished without adversely affecting the properties of the film at cryogenic temperatures. A preferred biodegradable film consists of a polyester comprising butane 1,4-diol and adipic acid to which a controlled quantity of terephthalic acid has been added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.