Patent US2724641A successfully refreshed from Google Patents.
US2724641A
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Method for recovering elemental sulfur from gases
Assignee: Stanolind Oil and Gas Co
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Filing: 1951-04-25
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Granted: 1955-11-22
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Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 John R Butler
- 👤 Jess E Dew
- 👤 Donald G Zink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:19
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05; C01B17/0404; C01B17/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A PROCESS FOR THE PRODUCTION OF ELEMENTAL SULFUR BY THE DIRECT OXIDATION OF HYDROGEN SULFIDE IN WHICH THE LATTER AND OXYGEN ARE EMPLOYED IN A MOLECULAR RATIO OF ABOUT 2:1, THE STEPS WHICH COMPRISE EFFECTING REACTION OF A GASEOUS STREAM CONTAINING HYDROGEN SULFIDE, NORMALLY GASEOUS HYDROCARBONS AND AN OXYGEN-CONTAINING GAS IN THE PRESENCE OF A CATALYST FOR SAID REACTION, CONDUCTING THE LATTER BELOW THE SURFACE OF A LIQUID BATH HELD AT A TEMPERATURE OF FROM ABOUT 230* TO ABOUT 320*F., SAID REACTION BEING CARRIED OUT IN A REACTION ZONE MAINTAINED AT A TEMPERATURE OF FROM ABOUT 400* TO ABOUT 1000*F., AND BRINGING THE RESULTING HOT PRODUCTS OF
Claim 2
Dependent Claim
108 words
IN A PROCESS FOR THE PRODUCTION OF ELEMENTAL SULFUR BY THE DIRECT OXIDATION OF HYDROGEN SULFIDE IN WHICH THE LATTER AND OXYGEN ARE EMPLOYED IN A MOLECULAR RATIO OF ABOUT 2:1, THE STEPS WHICH COMPRISE EFFECTING REACTION OF A GASEOUS STREAM CONTAINING HYDROGEN SULFIDE, NORMALLY GASEOUS HYDROCARBONS AND AN OXYGEN-CONTAINING GAS IN THE PRESENCE OF A CATALYST FOR SAID REACTION, CONDUCTING THE LATTER BELOW THE SURFACE OF A LIQUID BATH HELD AT A TEMPERATURE OF FROM ABOUT 230* TO ABOUT 320*F., SAID REACTION BEING CARRIED OUT IN A REACTION ZONE MAINTAINED AT A TEMPERATURE OF FROM ABOUT 400* TO ABOUT 1000*F., AND BRINGING THE RESULTING HOT PRODUCTS OF
References Cited (Backward Citations)
GB242681A
Cited
US1730440A
Cited
GB282508A
Cited
US2061523A
Cited
US2403451A
Cited
US2384926A
Cited
GB623264A
Cited
US2581135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |