US2636841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of heavy petroleum oils
Assignee: Standard Oil Development Co
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Filing: 1950-11-10
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Granted: 1953-04-28
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Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 Mason Ralph Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:56
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS OF DESULFURIZING AND UPGRADING SULFUR-CONTAINING HIGH BOILING PETROLEUM FRACTIONS WHICH COMPRISES CONTACTING SAID FRACTIONS IN A HYDROGENATION ZONE WITH A HYDROGEN-CONTAINING GAS IN THE PRESENCE OF AN IRON GROUP METAL CARBONYL CATALYST AND A HALOGEN PROMOTER, MAINTAINING WITHIN SAID ZONE, A PRESSURE IN THE RANGE OF ABOUT 500-5000 P. S. I. G. AND A TEMPERATURE IN THE RANGE OF ABOUT 300*-900* F. AND RECOVERING A PRODUCT CONTAINING SUBSTANTIALLY LESS SULFUR THAN SAID FIRST-NAMED FRACTION.
Claim 2
Dependent Claim
76 words
THE PROCESS OF DESULFURIZING AND UPGRADING SULFUR-CONTAINING HIGH BOILING PETROLEUM FRACTIONS WHICH COMPRISES CONTACTING SAID FRACTIONS IN A HYDROGENATION ZONE WITH A HYDROGEN-CONTAINING GAS IN THE PRESENCE OF AN IRON GROUP METAL CARBONYL CATALYST AND A HALOGEN PROMOTER, MAINTAINING WITHIN SAID ZONE, A PRESSURE IN THE RANGE OF ABOUT 500-5000 P. S. I. G. AND A TEMPERATURE IN THE RANGE OF ABOUT 300*-900* F. AND RECOVERING A PRODUCT CONTAINING SUBSTANTIALLY LESS SULFUR THAN SAID FIRST-NAMED FRACTION.
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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |