US2495133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating hydrocarbons with hydrofluoric acid
Assignee: PAN AMERICAN ROFINING Corp
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Filing: 1947-09-20
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Granted: 1950-01-17
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Expires: 1967-09-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:04
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/08; C10G17/00; C10G17/02; C10G17/04; C10G17/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE PROCESS OF CONVERTING A HEAVY HYDROCARBON OIL WHICH COMPRISES CONTACTING SAID OIL AND HYDROFLUORIC ACID IN A CONVERSION ZONE, SEPARATING CONVERSION PRODUCTS IN A SEPARATING ZONE INTO AN OIL PHASE AND AN HF PHASE, REMOVING HF FROM SAID HF PHASE IN AN HF STRIPPING ZONE THEREBY PRODUCING AN HF-SOLUBLE SUBSTANTIALLY FREE OF HF, RETURNING RECOVERED HF FROM SAID STRIPPING ZONE TO SAID CONVERSION ZONE, REMOVING HF AND HYDROCARBON GASES FROM SAID OIL PHASE IN A GASOLINE STRIPPING ZONE, ABSORBING HF FROM ADMIXTURE WITH SAID HYDROCARBON GASES IN AN ABSORPTION ZONE WHEREIN SAID GASES ARE INTIMATELY CONTACTED WITH SAID HF-SOLUBLE OIL AND RECYCLING SAID HF-SOLUBLE OIL CONTAINING ABSORBED HF FROM SAID ABSORPTION ZONE TO SAID CONVERSION ZONE.
Claim 2
Dependent Claim
117 words
THE PROCESS OF CONVERTING A HEAVY HYDROCARBON OIL WHICH COMPRISES CONTACTING SAID OIL AND HYDROFLUORIC ACID IN A CONVERSION ZONE, SEPARATING CONVERSION PRODUCTS IN A SEPARATING ZONE INTO AN OIL PHASE AND AN HF PHASE, REMOVING HF FROM SAID HF PHASE IN AN HF STRIPPING ZONE THEREBY PRODUCING AN HF-SOLUBLE SUBSTANTIALLY FREE OF HF, RETURNING RECOVERED HF FROM SAID STRIPPING ZONE TO SAID CONVERSION ZONE, REMOVING HF AND HYDROCARBON GASES FROM SAID OIL PHASE IN A GASOLINE STRIPPING ZONE, ABSORBING HF FROM ADMIXTURE WITH SAID HYDROCARBON GASES IN AN ABSORPTION ZONE WHEREIN SAID GASES ARE INTIMATELY CONTACTED WITH SAID HF-SOLUBLE OIL AND RECYCLING SAID HF-SOLUBLE OIL CONTAINING ABSORBED HF FROM SAID ABSORPTION ZONE TO SAID CONVERSION ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |