US2992076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sulfur
Assignee: Universal Oil Products Co
•
Filing: 1959-02-24
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Granted: 1961-07-11
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
- 👤 Stolfa Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:39
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PRODUCTION OF SULFUR WHICH COMPRISES ABSORBING SULFUR DIOXIDE AND HYDROGEN SULFIDE IN AN ALKYL AROMATIC HYDROCARBON SOLVENT WHICH IS FREE FROM HYDROGEN ATOMS ON THE ALPHA CARBON ATOM IN THE ALKYL RADICAL AND CONTAINING AT LEAST 4 AND NOT MORE THAN ABOUT 10 CARBON ATOMS IN THE ALKYL RADICAL, REACTING SAID SULFUR DIOXIDE AND HYDROGEN SULFIDE IN CONTACT WITH SAID SOLVENT AND FREE WATER THEREBY FORMING SULFUR, SEPARATING SAID SULFUR FROM SAID SOLVENT AND SAID WATER, FRACTIONATING SAID SOLVENT AT A TEMPERATURE LOWER THAN ABOUT
Claim 2
Dependent Claim
89 words
A PROCESS FOR THE PRODUCTION OF SULFUR WHICH COMPRISES ABSORBING SULFUR DIOXIDE AND HYDROGEN SULFIDE IN AN ALKYL AROMATIC HYDROCARBON SOLVENT WHICH IS FREE FROM HYDROGEN ATOMS ON THE ALPHA CARBON ATOM IN THE ALKYL RADICAL AND CONTAINING AT LEAST 4 AND NOT MORE THAN ABOUT 10 CARBON ATOMS IN THE ALKYL RADICAL, REACTING SAID SULFUR DIOXIDE AND HYDROGEN SULFIDE IN CONTACT WITH SAID SOLVENT AND FREE WATER THEREBY FORMING SULFUR, SEPARATING SAID SULFUR FROM SAID SOLVENT AND SAID WATER, FRACTIONATING SAID SOLVENT AT A TEMPERATURE LOWER THAN ABOUT
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |