US3246480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transporting liquefied gas in combination with crude oil
Assignee: Shell USA Inc
•
Filing: 1964-03-03
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Granted: 1966-04-19
•
Expires: 1984-03-03
Abstract
No abstract record available.
Inventors
- 👤 Rigby Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:02
CPC Classifications
F; F17; F17C; F17C11/00; F17C11/007; B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; C; C10; C10L; C10L3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF STORING LIQUEFIED PETROLEUM GAS AS A LAYER FLOATING ON THE SURFACE OF CRUDE OIL HAVING A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE BOILING POINT OF THE LIQUEFIED GAS, A VAPOR PRESSURE LESS THAN ONE ATMOSPHERE AT THE PREVAILING TEMPERATURE AND A DENSITY GREATER THAN THAT OF SAID LIQUEFIED GAS AT ITS BOILING POINT, SAID METHOD COMPRISING: (A) PROVIDING A CONTAINER HAVING TOP, BOTTOM AND SIDE WALLS AND AN OPEN-ENDED RETAINER SKIRT SITUATED WITHIN SAID CONTAINER NEAR THE TOP THEREOF AND EXTENDING OVER A MINOR FRACTIONAL PART OF THE CONTAINER AREA; (B) FILLING SAID CONTAINER WITH CRUDE OIL TO A LEVEL WHICH CLOSES OFF THE LOWER END OF SAID OPEN-ENDED RETAINER SKIRT; (C) FILLING SAID RETAINER SKIRT WITH LIQUEFIED PETROLEUM GAS AND FLOATING THE LATTER ON THE CRUDE OIL; (D) CONDENSING ANY OF SAID LIQUEFIED GAS WHICH VAPORIZES WITH A CONDENSER POSITIONED VERTICALLY ABOVE SAID RETAINER SKIRT; AND, (E) RETURNING SAID CONDENSATE TO THE BODY OF SAID LIQUEFIED GAS.
Claim 2
Independent Claim
160 words
A METHOD OF STORING LIQUEFIED PETROLEUM GAS AS A LAYER FLOATING ON THE SURFACE OF CRUDE OIL HAVING A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE BOILING POINT OF THE LIQUEFIED GAS, A VAPOR PRESSURE LESS THAN ONE ATMOSPHERE AT THE PREVAILING TEMPERATURE AND A DENSITY GREATER THAN THAT OF SAID LIQUEFIED GAS AT ITS BOILING POINT, SAID METHOD COMPRISING: (A) PROVIDING A CONTAINER HAVING TOP, BOTTOM AND SIDE WALLS AND AN OPEN-ENDED RETAINER SKIRT SITUATED WITHIN SAID CONTAINER NEAR THE TOP THEREOF AND EXTENDING OVER A MINOR FRACTIONAL PART OF THE CONTAINER AREA; (B) FILLING SAID CONTAINER WITH CRUDE OIL TO A LEVEL WHICH CLOSES OFF THE LOWER END OF SAID OPEN-ENDED RETAINER SKIRT; (C) FILLING SAID RETAINER SKIRT WITH LIQUEFIED PETROLEUM GAS AND FLOATING THE LATTER ON THE CRUDE OIL; (D) CONDENSING ANY OF SAID LIQUEFIED GAS WHICH VAPORIZES WITH A CONDENSER POSITIONED VERTICALLY ABOVE SAID RETAINER SKIRT; AND, (E) RETURNING SAID CONDENSATE TO THE BODY OF SAID LIQUEFIED GAS.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |