Patent US2919251A successfully refreshed from Google Patents.
US2919251A
Expired / Lapsed
US
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Regeneration of spent contact clay
Assignee: Sunoco Inc
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Filing: 1955-12-12
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Granted: 1959-12-29
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Expires: 1975-12-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank R Shuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/12; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12; B01J20/30; B01J20/34; B01J20/3433; B01J20/345; B01J20/3458; B01J20/3475
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
METHOD OF REVIVIFYING SPENT ADSORPTIVE CONTACT CLAY SPENT IN DECOLORIZING AND DEODORIZING A PETROLEUM FRACTION AD CONSISTING ESSENTIALLY OF ADSORPTIVE CONTACT CLAY AND ADSORBED ORGANIC MATERIAL RESULTING FROM SUCH DECOLORIZING AND DEODORIZING, SAID METHOD COMPRISING: HYDROGENATING SAID SPENT CLAY AT TEMPERATURES IN THE RANGE OF FROM 500* F. TO 750* F. AND PRESSURES IN THE RANGE OF 500 P.S.I.G. TO 2000 P.S.I.G., EXTRACTING OIL FROM THE HYDROGENATED SPENT CLAY WITH AN ORGANIC SOLVENT, AND AGAIN HYDROGENATING SAID SPENT CLAY AT TEMPERATURES IN THE RANGE OF 750* F. TO 1000* F. AND PRESSURES IN THE RANGE OF 500 P.S.I.G. AND 2000 P.S.I.G.
Claim 2
Dependent Claim
101 words
METHOD OF REVIVIFYING SPENT ADSORPTIVE CONTACT CLAY SPENT IN DECOLORIZING AND DEODORIZING A PETROLEUM FRACTION AD CONSISTING ESSENTIALLY OF ADSORPTIVE CONTACT CLAY AND ADSORBED ORGANIC MATERIAL RESULTING FROM SUCH DECOLORIZING AND DEODORIZING, SAID METHOD COMPRISING: HYDROGENATING SAID SPENT CLAY AT TEMPERATURES IN THE RANGE OF FROM 500* F. TO 750* F. AND PRESSURES IN THE RANGE OF 500 P.S.I.G. TO 2000 P.S.I.G., EXTRACTING OIL FROM THE HYDROGENATED SPENT CLAY WITH AN ORGANIC SOLVENT, AND AGAIN HYDROGENATING SAID SPENT CLAY AT TEMPERATURES IN THE RANGE OF 750* F. TO 1000* F. AND PRESSURES IN THE RANGE OF 500 P.S.I.G. AND 2000 P.S.I.G.
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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |