US3669816A
Expired / Lapsed
US
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Lining for cryogenic tank
Assignee: GT Schjeldahl Co
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Filing: 1969-10-01
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Granted: 1972-06-13
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Expires: 1989-10-01
Abstract
Abstract THIS INVENTION RELATES TO A LINING FOR USE IN CRYOGENIC TANKS WHEEIN SHEETS OF LAMINATE MATERIAL COMPRISING MULTIPLE LAYERS OF WOVEN POLYETHYLENE TEREPHTHALATE FIBERS, ALUMINUM, AND STRESS-ORIENTED POLYETHYLENE TEREPHTHALATE FILMS, ARE JOINED BY TAPES OF LAMINATE MATERIAL COMPRISING LAYERS OF LIKE MATERIALS TO FORM A LINING WHICH IS SUBSTAN- TIALLY IMPREMEABLE TO LIQUIDS AND GASES AT CRYOGENIC TEMPERATURES.
Inventors
- 👤 Ernest L Smith
- 👤 Arthur R Duffy
- 👤 Eugene S Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B15/00; B32B15/04; B32B15/043; B32B1/00; B32B15/08; B32B15/09; B32B15/20; B32B27/12; B32B27/36; F; F17; F17C; F17C13/00; F17C13/004; B32B2262/00; B32B2262/02; B32B2262/0276; B32B2367/00; B32B2439/00; B32B2439/40; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0333; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0646; F17C2203/0658; F17C2203/0663; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/197; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3415; Y10T442/3423
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |