US2998304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sulfur
Assignee: Universal Oil Products Co
•
Filing: 1958-12-08
•
Granted: 1961-08-29
•
Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 Urban Peter
- 👤 William K T Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR THE PRODUCTION OF SULFUR WHICH COMPRISES ABSORBING SULFUR DIOXIDE AND HYDROGEN SULFIDE IN A WATER-SATURATED HYDROCARBON SOLVENT, REACTING SAID SULFUR DIOXIDE AND SAID HYDROGEN SULFIDE IN THE PRESENCE OF A DETERGENT AND IN CONTACT WITH SAID SOLVENT AND A SUFFICIENT EXCESS OF ADDITIONAL FREE WATER TO FORM A HYDROCARBON SOLVENT PHASE AND AN AQUEOUS SULFUR-CONTAINING PHASE, SAID DETERGENT BEING SOLUBLE IN AT LEAST ONE OF SAID PHASES AND BEING PRESENT IN SUFFICIENT AMOUNT TO PREVENT AGGLOMERATION OF SULFUR, SEPARATING THE RESULTANT REACTION MIXTURE INTO A HYDROCARBON SOLVENT LAYER AND AN AQUEOUS SULFUR-CONTAINING LAYER, AND RECOVERING SULFUR FROM SAID AQUEOUS LAYER.
Claim 2
Dependent Claim
103 words
A PROCESS FOR THE PRODUCTION OF SULFUR WHICH COMPRISES ABSORBING SULFUR DIOXIDE AND HYDROGEN SULFIDE IN A WATER-SATURATED HYDROCARBON SOLVENT, REACTING SAID SULFUR DIOXIDE AND SAID HYDROGEN SULFIDE IN THE PRESENCE OF A DETERGENT AND IN CONTACT WITH SAID SOLVENT AND A SUFFICIENT EXCESS OF ADDITIONAL FREE WATER TO FORM A HYDROCARBON SOLVENT PHASE AND AN AQUEOUS SULFUR-CONTAINING PHASE, SAID DETERGENT BEING SOLUBLE IN AT LEAST ONE OF SAID PHASES AND BEING PRESENT IN SUFFICIENT AMOUNT TO PREVENT AGGLOMERATION OF SULFUR, SEPARATING THE RESULTANT REACTION MIXTURE INTO A HYDROCARBON SOLVENT LAYER AND AN AQUEOUS SULFUR-CONTAINING LAYER, AND RECOVERING SULFUR FROM SAID AQUEOUS LAYER.
References Cited (Backward Citations)
US1900398A
Cited
US1964808A
Cited
US2177068A
Cited
US2614904A
Cited
US2767060A
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US2881047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |