US2881047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of simultaneously removing hydrogen sulfide from gaseous mixtures and producing sulfur therefrom
Assignee: LAURENCE S REID
•
Filing: 1956-05-29
•
Granted: 1959-04-07
•
Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 Townsend Francis Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:47
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
THE PROCESS OF REMOVING HYDROGEN SULFIDE FROM A GASEOUS MIXTURE WHICH COMPRISES CONTRACTING SAID GASEOUS MIXTURE WITH SULFUR DIOXIDE IN A SOLVENT COMPRISING A CONCENTRATED AQUEOUS SOLUTION OF AN INERT, NEUTRAL STABLE ORGANIC SOLVENT HAVING A VAPOR PRESSURE AT 20* C. OF NOT MORE THAN ABOUT 10 MILLIMETERS OF MERCURY AND WHEREIN THE SOLUBILITY OF WATER IN SAID ORGANIC SOLVENT IN NOT LESS THAN ABOUT 2% BY WEIGHT AT 20* C. SAID ORGANIC SOLVENT BEING FURTHER CHARACTERIZED BY CONTAINING AT LEAST TWO HERETO ATOMS, AT LEAST ONE OF WHICH IS A LOWER CHALOGEN. AND BY CONTAINING NOT MORE THAN TWO VICINYL HYDROXYL RADICALS, WHEREBY REACTION BETWEEN THE HYDROGEN SULFIDE AND THE SULFUR DIOXIDE IS RAPID AND SULFUR PARTICLES ARE PRECIPITATED IN THE REACTION MEDIUM.
References Cited (Backward Citations)
US927342A
Cited
US1672924A
Cited
US1900398A
Cited
US2043084A
Cited
GB430865A
Cited
US2139375A
Cited
US2729543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |