US2600671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofluoric acid refining of hydrocarbon oils
Assignee: Pan American Refining Corp
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Filing: 1949-10-18
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Granted: 1952-06-17
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Expires: 1969-10-18
Abstract
No abstract record available.
Inventors
- 👤 Miron Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:30
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PROCESS OF SEPARATING TAR-CONTAINING MINERAL OILS WHICH COMPRISES INTIMATELY CONG TACTING SAID OILS WITH AT LEAST ABOUT ONE-TENTH PART, BY WEIGHT OF LIQUOR HF AT A TEMPERTURE OF 375 TO 450* F. AND UNDER SUFFICIENT PRESSURE TO MAINTAIN THE HF IN LIQUID CONDITION, SEPARATING THE RESULTING MIXTURE WHILE AT SAID TEMPERATURE BY DIFFERENCES IN DENSITY INTO THREE PHASES, A TAR PHASE, AN OIL PHASE, AND A LIGHTER HF PHASE, SEPARATELY WITHDRAWING EACH OF SAID PHASES AND REMOVING HF FROM SAID TAR PHASE AND SAID OIL PHASE.
Claim 2
Dependent Claim
87 words
THE PROCESS OF SEPARATING TAR-CONTAINING MINERAL OILS WHICH COMPRISES INTIMATELY CONG TACTING SAID OILS WITH AT LEAST ABOUT ONE-TENTH PART, BY WEIGHT OF LIQUOR HF AT A TEMPERTURE OF 375 TO 450* F. AND UNDER SUFFICIENT PRESSURE TO MAINTAIN THE HF IN LIQUID CONDITION, SEPARATING THE RESULTING MIXTURE WHILE AT SAID TEMPERATURE BY DIFFERENCES IN DENSITY INTO THREE PHASES, A TAR PHASE, AN OIL PHASE, AND A LIGHTER HF PHASE, SEPARATELY WITHDRAWING EACH OF SAID PHASES AND REMOVING HF FROM SAID TAR PHASE AND SAID OIL PHASE.
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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |