Patent EP0146299A1 successfully refreshed from Google Patents.
US2564071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining oils
Assignee: Standard Oil Co
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Filing: 1946-07-02
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Granted: 1951-08-14
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Expires: 1966-07-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Lien
- 👤 Bernard L Evering
- 👤 Frank W Hacckl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:39
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
THE PROCESS FOR REFINING A HYDROCABON LUBRICATING OIL STOCK HAVING A SPECIFIC DISPERSION INN SUBSTANTIAL EXCESS OF 100, WHICH PROCESS COMPRISES CONTACTING SAID STOCK WITH ABOUT 50 PER CENT BY VOLUME OF LIQUID HYDROGEN FLUORIDE, BASED ON THE VOLUME OF SAID STOCK, AT A TEMPERATURE OF ABOUT 200* F. UNDER PRESSURE SUFFICIENT TO MAINTAIN THE LIQUID PHASE, FOR A PERIOPD OF TIME SUFFICIENT TO EFFECT A SUBSTANTIAL INCREASE IN THE VISCOSITY INDEX OF SAID STOCK, COOLING THE RESULTANT MIXTURE OF LIQUID HYDROGEN FLUORIDE AND LUBRICATING OIL STOCK TO A TEMPERATURE BELOW ABOUT 100* F., SEPARATING A PARTIALLY REFINED LUBRICATING OIL STOCK AND A LIQUID HYDROGEN FLUORIDE-CONTAINING PHASE, THEREAFTER CONTACTING SAID PARTIALLY REFINED LUBRICATING OIL STOCK WITH LIQUID HYDROGEN FLUORIDE-BORON FLUORIDE CONTAINING BETWEEN ABOUT 10 PER CENT AND ABOUT 60 PER CENT BY WEIGHT OF BORON FLUORIDE, BASED ON THE WEIGHT OF THE HYDROGEN FLUORIDE, AT A TEMPERATURE BETWEEN ABOUT 40* F. AND ABOUT 80* F. UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE LIQUID PHASE, THE QUANTITY OF HYDROGEN FLUORIDE-BORON FLUORIDE BEING SUFFICIENT AT LEAST TO FORM A DISTINCT LIQUID PHASE UNDER THE CONTACTING CONDITIONS, AND SEPARATING A REFINED HYDROCARBON OIL HAVING A SPECIFIC DISPERSION NOT IN EXCESS OF ABOUT 100 HYDROGEN FLUORIDE-BORN FLUORIDE FROM THE RESULTANT MIXTURE.
Claim 2
Dependent Claim
207 words
THE PROCESS FOR REFINING A HYDROCABON LUBRICATING OIL STOCK HAVING A SPECIFIC DISPERSION INN SUBSTANTIAL EXCESS OF 100, WHICH PROCESS COMPRISES CONTACTING SAID STOCK WITH ABOUT 50 PER CENT BY VOLUME OF LIQUID HYDROGEN FLUORIDE, BASED ON THE VOLUME OF SAID STOCK, AT A TEMPERATURE OF ABOUT 200* F. UNDER PRESSURE SUFFICIENT TO MAINTAIN THE LIQUID PHASE, FOR A PERIOPD OF TIME SUFFICIENT TO EFFECT A SUBSTANTIAL INCREASE IN THE VISCOSITY INDEX OF SAID STOCK, COOLING THE RESULTANT MIXTURE OF LIQUID HYDROGEN FLUORIDE AND LUBRICATING OIL STOCK TO A TEMPERATURE BELOW ABOUT 100* F., SEPARATING A PARTIALLY REFINED LUBRICATING OIL STOCK AND A LIQUID HYDROGEN FLUORIDE-CONTAINING PHASE, THEREAFTER CONTACTING SAID PARTIALLY REFINED LUBRICATING OIL STOCK WITH LIQUID HYDROGEN FLUORIDE-BORON FLUORIDE CONTAINING BETWEEN ABOUT 10 PER CENT AND ABOUT 60 PER CENT BY WEIGHT OF BORON FLUORIDE, BASED ON THE WEIGHT OF THE HYDROGEN FLUORIDE, AT A TEMPERATURE BETWEEN ABOUT 40* F. AND ABOUT 80* F. UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE LIQUID PHASE, THE QUANTITY OF HYDROGEN FLUORIDE-BORON FLUORIDE BEING SUFFICIENT AT LEAST TO FORM A DISTINCT LIQUID PHASE UNDER THE CONTACTING CONDITIONS, AND SEPARATING A REFINED HYDROCARBON OIL HAVING A SPECIFIC DISPERSION NOT IN EXCESS OF ABOUT 100 HYDROGEN FLUORIDE-BORN FLUORIDE FROM THE RESULTANT MIXTURE.
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |