US2640010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing sulfur from petroleum hydrocarbons
Assignee: Airco Inc
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Filing: 1951-11-08
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Granted: 1953-05-26
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Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Charles O Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:29
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE METHOD OF REMOVING THE MAJOR PORTION OF ALL SULPHUR COMPOUNDS CONTAINED IN PETROLEUM HYDROCARBONS WHICH COMPRISES OXIDIZING SULPHUR OF THE SULPHUR COMPOUNDS TO SULPHUR DIOXIDE BY PASSING THE VAPOR OF THE HYDROCARBON OVER AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF A MATERIAL CONTAINING CUPROUS SULPHIDE IN THE PRESENCE OF GASEOUS OXYGEN.
Claim 2
Independent Claim
51 words
THE METHOD OF REMOVING THE MAJOR PORTION OF ALL SULPHUR COMPOUNDS CONTAINED IN PETROLEUM HYDROCARBONS WHICH COMPRISES OXIDIZING SULPHUR OF THE SULPHUR COMPOUNDS TO SULPHUR DIOXIDE BY PASSING THE VAPOR OF THE HYDROCARBON OVER AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF A MATERIAL CONTAINING CUPROUS SULPHIDE IN THE PRESENCE OF GASEOUS OXYGEN.
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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |