US3379012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for ground reservoirs
Assignee: Conch International Methane Ltd
•
Filing: 1964-03-24
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Granted: 1968-04-23
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Expires: 1984-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jackson Robert Glover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/02; E04H7/04; E04H7/06; E04H7/065; F; F17; F17C; F17C3/00; F17C3/005; F17C2201/00; F17C2201/05; F17C2201/052; F17C2270/00; F17C2270/01; F17C2270/0142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A SEALING MEANS FOR A GROUND RESERVIOR FOR STORING SUBSTANCES BELOW AMBIENT TEMPERATURE, SAID RESERVOIR HAVING A FLUID-IMPERVIOUS ROOD ABOVE THE HIGHEST LEVEL OF THE RESERVOIR, WHICH COMPRISES A CONTINUOUS, FLUID-IMPERVIOUS MEMBRANE EXTENDING DOWN FROM THE ROOF OF THE RESERVIOR INTO A REGION CONTAINING A LIQUID WHICH FREEZES AT THE TEMPERATURE OF THE STORED SUBSTANCE, AND A LAYER OF FLUIDIMPERMEABLE, LOW MODULUS MATERIAL ADHERENTLY SECURED TO AT LEAST THE INNER FACE OF THE LOWER PORTION OF THE MEMBRANE SO THAT IS AT LEAST COVERS THAT PORTION OF THE INNER FACE OF THE MEMBRANE WHICH WOULD OTHERWISE BE IN CONTACT WITH SAID LIQUID WHICH FREEZES AT THE TEMPERATURE OF
Claim 2
Dependent Claim
108 words
A SEALING MEANS FOR A GROUND RESERVIOR FOR STORING SUBSTANCES BELOW AMBIENT TEMPERATURE, SAID RESERVOIR HAVING A FLUID-IMPERVIOUS ROOD ABOVE THE HIGHEST LEVEL OF THE RESERVOIR, WHICH COMPRISES A CONTINUOUS, FLUID-IMPERVIOUS MEMBRANE EXTENDING DOWN FROM THE ROOF OF THE RESERVIOR INTO A REGION CONTAINING A LIQUID WHICH FREEZES AT THE TEMPERATURE OF THE STORED SUBSTANCE, AND A LAYER OF FLUIDIMPERMEABLE, LOW MODULUS MATERIAL ADHERENTLY SECURED TO AT LEAST THE INNER FACE OF THE LOWER PORTION OF THE MEMBRANE SO THAT IS AT LEAST COVERS THAT PORTION OF THE INNER FACE OF THE MEMBRANE WHICH WOULD OTHERWISE BE IN CONTACT WITH SAID LIQUID WHICH FREEZES AT THE TEMPERATURE OF
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |