US2769751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating spent oil refinery clay
Assignee: Texaco Development Corp
•
Filing: 1953-04-30
•
Granted: 1956-11-06
•
Expires: 1973-04-30
Abstract
No abstract record available.
Inventors
- 👤 Peter L Paull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:48
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3416; B01J20/02; B01J20/06; B01J20/08; B01J20/10; B01J20/103; B01J20/12; B01J20/20; B01J20/3433; B01J20/345; B01J20/3458; B01J20/3475; B01J20/3483
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR TREATING SPENT PETROLEUM CLAY CONTAINING COLOR IMPURITIES AND RESIDUAL OIL, COMPRISING FORMING A FLOWABLE MIXTURE OF SUCH SPENT CLAY IN AT LEAST ONE VAPORIZABLE LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER, SOLVENTS FOR SAID RESIDUAL OIL, AND SOLVENTS FOR SAID COLOR IMPURITIES; PASSING SAID MIXTURE INTO AN INITIAL PART OF A TUBULAR HEATING ZONE; HEATING SAID MIXTURE IN SAID TUBULAR ZONE TO A TEMPERATURE SUFFICIENT TO VAPORIZE BOTH SAID VAPORIZABLE LIQUID AND RESIDUAL OIL, THEREBY FORMING A FLOWING DISPERSION OF CLAY PARTICLES IN VAPOR; PASSING DISPERSION AS A FLOWING STREAM THROUGH A SUCCEEDING ZONE; AND THEN SEPARATING SAID VAPOR FROM SAID CLAY PARTICLES.
Claim 2
Dependent Claim
107 words
A PROCESS FOR TREATING SPENT PETROLEUM CLAY CONTAINING COLOR IMPURITIES AND RESIDUAL OIL, COMPRISING FORMING A FLOWABLE MIXTURE OF SUCH SPENT CLAY IN AT LEAST ONE VAPORIZABLE LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER, SOLVENTS FOR SAID RESIDUAL OIL, AND SOLVENTS FOR SAID COLOR IMPURITIES; PASSING SAID MIXTURE INTO AN INITIAL PART OF A TUBULAR HEATING ZONE; HEATING SAID MIXTURE IN SAID TUBULAR ZONE TO A TEMPERATURE SUFFICIENT TO VAPORIZE BOTH SAID VAPORIZABLE LIQUID AND RESIDUAL OIL, THEREBY FORMING A FLOWING DISPERSION OF CLAY PARTICLES IN VAPOR; PASSING DISPERSION AS A FLOWING STREAM THROUGH A SUCCEEDING ZONE; AND THEN SEPARATING SAID VAPOR FROM SAID CLAY PARTICLES.
References Cited (Backward Citations)
US1891107A
Cited
US1957449A
Cited
US2014915A
Cited
US2236679A
Cited
US2382755A
Cited
US2436938A
Cited
US2602044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |