US3339780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex insulating panel
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-11-06
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Granted: 1967-09-05
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Expires: 1984-11-06
Abstract
No abstract record available.
Inventors
- 👤 Charles D Forman
- 👤 Marnell A Segura
- 👤 Paul T Gorman
- 👤 Adolph A Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/001; F17C3/00; F17C3/02; F17C3/025; F17C2203/00; F17C2203/03; F17C2203/0362; F17C2203/0366; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0646; F17C2203/0658; F17C2203/0663; F17C2209/00; F17C2209/22; F17C2209/227; F17C2270/00; F17C2270/01; F17C2270/0102; F17C2270/0105; F17C2270/0107; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PREFABRICATED DUPLEX INSULATING PANEL FORMING PRIMARY AND SECONDARY BARRIER WALLS AND INCLUDING (A) A BASE PANEL OF INSULATING MATERIAL HAVING A PREDETERMINED HIGH DIMENSIONAL STABILITY AT CRYOGENIC TEMPERATURES AND FORMING A SECONDARY BARRIER WALL, SAID BASE PANEL INCLUDING A POLYURETHANE FOAM INTERIOR AND A GLASS FIBER REINFORCED RESIN OUTER SHELL AND AND (B) AN ALUMINUM METAL FOIL MEMBER FORMING A PRIMARY BARRIER WALL AND HAVING A PREDETERMINED LESSER DIMENSIONAL STABILITY AT CRYOGENIC TEMPERATURES THAN SAID BASE PANEL, (C) SAID FOIL HAVING BODY PORTIONS AND FLAP PORTIONS, (D) BONDING MEANS INCLUDING A GLASS FIBER CLOTH, ADHERING SAID BODY PORTIONS OF SAID FOIL TO SAID BASE PANEL, WHEREBY SAID BONDED PORTIONS OF SAID FOIL HAVE AN INCREASED DIMENSIONAL STABILITY AT CRYOGENIC TEMPERATURES SUBSTANTIALLY EQUIVALENT TO THAT OF SAID BASE PANEL, (E) SAID FLAP PORTIONS EXTENDING BEYOND THE PERIPHERY OF SAID BASE PANEL AND BEING FREELY MOVABLE RELATIVE THERETO.
Claim 2
Dependent Claim
147 words
A PREFABRICATED DUPLEX INSULATING PANEL FORMING PRIMARY AND SECONDARY BARRIER WALLS AND INCLUDING (A) A BASE PANEL OF INSULATING MATERIAL HAVING A PREDETERMINED HIGH DIMENSIONAL STABILITY AT CRYOGENIC TEMPERATURES AND FORMING A SECONDARY BARRIER WALL, SAID BASE PANEL INCLUDING A POLYURETHANE FOAM INTERIOR AND A GLASS FIBER REINFORCED RESIN OUTER SHELL AND AND (B) AN ALUMINUM METAL FOIL MEMBER FORMING A PRIMARY BARRIER WALL AND HAVING A PREDETERMINED LESSER DIMENSIONAL STABILITY AT CRYOGENIC TEMPERATURES THAN SAID BASE PANEL, (C) SAID FOIL HAVING BODY PORTIONS AND FLAP PORTIONS, (D) BONDING MEANS INCLUDING A GLASS FIBER CLOTH, ADHERING SAID BODY PORTIONS OF SAID FOIL TO SAID BASE PANEL, WHEREBY SAID BONDED PORTIONS OF SAID FOIL HAVE AN INCREASED DIMENSIONAL STABILITY AT CRYOGENIC TEMPERATURES SUBSTANTIALLY EQUIVALENT TO THAT OF SAID BASE PANEL, (E) SAID FLAP PORTIONS EXTENDING BEYOND THE PERIPHERY OF SAID BASE PANEL AND BEING FREELY MOVABLE RELATIVE THERETO.
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |