Patent US3605774A successfully refreshed from Google Patents.
US3605774A
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US
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Maritime apparatus utilizable as a hydrocarbon reservoir
Assignee: Total Compagnie Francaise des Petroles SA
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Filing: 1970-07-20
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Granted: 1971-09-20
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Expires: 1990-07-20
Abstract
Abstract A marine installation for storing hydrocarbon liquids has a reservoir containing the hydrocarbon liquid and water beneath the hydrocarbon liquid. As the hydrocarbon liquid enters the reservoir water is removed. When the hydrocarbon liquid is removed water is added to maintain sufficient ballast in the installation to keep the installation immersed and in place.
Inventors
- 👤 Pierre Launay
- 👤 Tran Dinh Phat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:28
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/78; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/2931; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86187; Y10T137/86196
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |