Patent US3185641A successfully refreshed from Google Patents.
US3185641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of elemental sulfur from hydrocarbons
Assignee: ConocoPhillips Co
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Filing: 1961-12-15
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Granted: 1965-05-25
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Expires: 1981-12-15
Abstract
No abstract record available.
Inventors
- 👤 Robert H Cowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:25
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD FOR REMOVING ELEMENTAL SULFUR FROM A LIQUID HYDROCARBON WHICH COMPRISES CONTACTING WITH A TREATING AGENT CONSISTING OF SOLID SODIUM HYDROXIDE A HYDROCARBON STREAM HAVING INCLUDED THEREIN AT LEAST A TRACE OF ELEMENTAL SULFUR AND AT LEAST 7.6 PARTS BY WEIGHT OF WATER PER PART BY WEIGHT OF SULFUR CONTAINED THEREIN TO YIELD A HYDROCARBON PHASE AND AN AQUEOUS PHASE CONTAINING REMOVED SULFUR, AND RECOVERING SAID HYDROCARBON PHASE.
Claim 2
Independent Claim
69 words
A METHOD FOR REMOVING ELEMENTAL SULFUR FROM A LIQUID HYDROCARBON WHICH COMPRISES CONTACTING WITH A TREATING AGENT CONSISTING OF SOLID SODIUM HYDROXIDE A HYDROCARBON STREAM HAVING INCLUDED THEREIN AT LEAST A TRACE OF ELEMENTAL SULFUR AND AT LEAST 7.6 PARTS BY WEIGHT OF WATER PER PART BY WEIGHT OF SULFUR CONTAINED THEREIN TO YIELD A HYDROCARBON PHASE AND AN AQUEOUS PHASE CONTAINING REMOVED SULFUR, AND RECOVERING SAID HYDROCARBON PHASE.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |