US3798157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of contaminants from hydrocracking feedstocks
Assignee: Mexican Institute of Petroleum
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Filing: 1973-05-10
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Granted: 1974-03-19
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Expires: 1993-05-10
Abstract
Abstract THE ELIMINATION OF METALLIC POISONS FOR HYDROCRACKING CATALYSTS AND ASPHALTENE AND LIKE POLYMER FRACTIONS FROM FEEDSTOCKS IS ACHIEVED RAPIDLY AND EFFECTIVELY BY ADDING TO THE FEEDSTOCK INSOLUBLE FINELY PARTICULATE MATTER, E.G. TALC OR ASPHALTENE IN QUITE MINOR AMOUNT, COMBINING THE METALLIC COMPOUNDS AND POLYMER FRACTIONS INTO GRAVITY SEPARABLE AGGLOMERATES AND SEPARATING THE AGGLOMERATES AND THE DESIRED FRACTION OF THE FEEDSTOCK.
Inventors
- 👤 F Manzanilla
- 👤 A Manjarrez
- 👤 L Conroy
- 👤 J Lara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |