US2504102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of revivifying sulfur killed catalysts
Assignee: ExxonMobil Oil Corp
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Filing: 1947-03-10
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Granted: 1950-04-18
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Expires: 1967-03-10
Abstract
No abstract record available.
Inventors
- 👤 Edward J R Sorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:32
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD FOR REVIVIFYING CLAY TYPE CATALYSTS WHICH HAVE SUFFERED LOSS IN ACTIVITY DUE TO USE IN CYCLIC HYDROCARBON CONVERSION SYSTEMS WHEREIN IT IS CYCLICALLY CONTACTED WITH SULFUR BEARING HYDROCATION REACTANTS AND CONTACTED WITH A COMBUSTION SUPPORTING GAS FOR REMOVAL OF CARBONACEOUS CONTAMINANTS WHICH COMPRISES: SUBJECTING SAID CATALYST AFTER REMOVAL OF THE CARBONACEOUS CONTAMINANT DEPOSITS THEREON BY BURNING TO A TEMPERATURE OF AT LEAST 1050*F. BUT LESS THAN ABOUT 1425*F. FOR A PERIOD OF AT LEAST 5 HOURS IN AN ATMOSPHERE OF LOW MOISTURE CONTENT.
Claim 2
Independent Claim
85 words
A METHOD FOR REVIVIFYING CLAY TYPE CATALYSTS WHICH HAVE SUFFERED LOSS IN ACTIVITY DUE TO USE IN CYCLIC HYDROCARBON CONVERSION SYSTEMS WHEREIN IT IS CYCLICALLY CONTACTED WITH SULFUR BEARING HYDROCATION REACTANTS AND CONTACTED WITH A COMBUSTION SUPPORTING GAS FOR REMOVAL OF CARBONACEOUS CONTAMINANTS WHICH COMPRISES: SUBJECTING SAID CATALYST AFTER REMOVAL OF THE CARBONACEOUS CONTAMINANT DEPOSITS THEREON BY BURNING TO A TEMPERATURE OF AT LEAST 1050*F. BUT LESS THAN ABOUT 1425*F. FOR A PERIOD OF AT LEAST 5 HOURS IN AN ATMOSPHERE OF LOW MOISTURE CONTENT.
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) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |