Patent US2987379A successfully refreshed from Google Patents.
US2987379A
Expired / Lapsed
US
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Production of sulfur
Assignee: Universal Oil Products Co
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Filing: 1958-12-15
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Granted: 1961-06-06
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Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Urban Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:49
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/14; C10K1/143; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05; C10K1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN A PROCESS FOR THE PRODUCTION OF SULFUR WHICH COMPRISES ABSORBING SULFUR DIOXIDE AND HYDROGEN SULFIDE IN AN ORGANIC SOLVENT AND WATER, REACTING SAID SULFUR DIOXIDE AND SAID HYDROGEN SULFIDE IN CONTACT WITH SAID SOLVENT AND SAID WATER THEREBY FORMING SULFUR, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SOLVENT AN AMINE SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLANILINE, N,N-DIETHYLANILINE, N,N-DIPROPYLANILINE, DIMETHYLAMINE, TRIMETHYL-
Claim 2
Dependent Claim
62 words
IN A PROCESS FOR THE PRODUCTION OF SULFUR WHICH COMPRISES ABSORBING SULFUR DIOXIDE AND HYDROGEN SULFIDE IN AN ORGANIC SOLVENT AND WATER, REACTING SAID SULFUR DIOXIDE AND SAID HYDROGEN SULFIDE IN CONTACT WITH SAID SOLVENT AND SAID WATER THEREBY FORMING SULFUR, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SOLVENT AN AMINE SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLANILINE, N,N-DIETHYLANILINE, N,N-DIPROPYLANILINE, DIMETHYLAMINE, TRIMETHYL-
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |