Patent US5547017B1 successfully refreshed from Google Patents.
US2779718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation of shale oil by elution chromatography
Assignee: Gulf Research and Development Co
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Filing: 1953-01-28
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Granted: 1957-01-29
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Expires: 1973-01-28
Abstract
No abstract record available.
Inventors
- 👤 Robert G Capell
- 👤 Jr Clarence Karr
- 👤 Jr William D Weatherford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR SEPATATING FROM A SHALE OIL CONTAINING SUBSTANTIAL AMOUNTS OF SULFUR AND NITROGEN COMPOUNDS A FRACTION OF REDUCED NITROGEN AND SULFUR CONTENT, WHICH COMPRISES INTRODUCING A LIQUID COMPRISING AT LEAST ABOUT 25 VOLUME PERCENT OF SAID SHALE OIL INTO CONTACT WITH A BED OF ADSORBENT MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA AND ACTIVATED BAUXITE IN AN AMOUNT WHICH PENETRATES NO MORE THAN ABOUT 90 PERCENT OF THE LENGHT OF THE ADSORBENT BED, THEREAFTER ELUTING SAID ADSORBENT BED WITH A NON-POLAR ELUANT, AND RECOVERING ELUATE OF LOW SULFUR AND LOW NITROGEN CONTENT FROM THE ABSORBENT BED.
Claim 2
Dependent Claim
100 words
A PROCESS FOR SEPATATING FROM A SHALE OIL CONTAINING SUBSTANTIAL AMOUNTS OF SULFUR AND NITROGEN COMPOUNDS A FRACTION OF REDUCED NITROGEN AND SULFUR CONTENT, WHICH COMPRISES INTRODUCING A LIQUID COMPRISING AT LEAST ABOUT 25 VOLUME PERCENT OF SAID SHALE OIL INTO CONTACT WITH A BED OF ADSORBENT MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA AND ACTIVATED BAUXITE IN AN AMOUNT WHICH PENETRATES NO MORE THAN ABOUT 90 PERCENT OF THE LENGHT OF THE ADSORBENT BED, THEREAFTER ELUTING SAID ADSORBENT BED WITH A NON-POLAR ELUANT, AND RECOVERING ELUATE OF LOW SULFUR AND LOW NITROGEN CONTENT FROM THE ABSORBENT BED.
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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |