US3578541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally insulated receptacle for a cryogenic fluid
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1966-12-16
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Granted: 1971-05-11
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Expires: 1986-12-16
Abstract
Abstract CRYOGENIC INSULATION IS PROVIDED, COMPRISING KLEGECELL G300, WHICH IS FOAMED PLASTIC FORMED FROM POLYVINYL CHLORIDE, A COPOLYMER OF A VINYLIDENE MONOMER AND AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID ANHYDRIDE, AND A POLYISOCYANATE HAVING AT LEAST TWO -N=C=O GROUPS PER MOLECULE. IT IS IMPERVIOUS TO ATMOSPHERIC GASES AND THUS PROTECTS THE INSULATION. IT CAN BE USED IN COMBINATION WITH SUPERINSULATION, AND CAN BE COVERED WITH A PROTECTIVE AND/OR ABLATIVE COATING.
Inventors
- 👤 Henri Tariel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:22
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/001; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0333; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/902; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |