US2641527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of sulfur from gases
Assignee: Sunoco Inc
•
Filing: 1949-04-12
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Granted: 1953-06-09
•
Expires: 1969-04-12
Abstract
No abstract record available.
Inventors
- 👤 Koerner E Leutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:13
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/105; C10K1/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE SELECTED REMOVAL OF HYDROGEN SULFIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME AND CARBON DIOXIDE WHICH COMPRISES TREATING SAID GASEOUS MIXTURE WITH A TREATING AGENT CONSISTING ESSENTIALLY OF WATER AND, DISSOLVED THEREIN, AN IRON SALT SOLUBLE IN WATER AND HAVING A WEAKLY ACIDIC, ORGANIC ANION, SAID TREATING AGENT BEING ACIDIC AND HAVING A PH WITHIN THE RANGE 4-7; AND CONTINUING THE TREATMENT UNTIL A PRECIPITATE OF INSOLUBLE IRON SULFIDE IS FORMED.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE SELECTED REMOVAL OF HYDROGEN SULFIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME AND CARBON DIOXIDE WHICH COMPRISES TREATING SAID GASEOUS MIXTURE WITH A TREATING AGENT CONSISTING ESSENTIALLY OF WATER AND, DISSOLVED THEREIN, AN IRON SALT SOLUBLE IN WATER AND HAVING A WEAKLY ACIDIC, ORGANIC ANION, SAID TREATING AGENT BEING ACIDIC AND HAVING A PH WITHIN THE RANGE 4-7; AND CONTINUING THE TREATMENT UNTIL A PRECIPITATE OF INSOLUBLE IRON SULFIDE IS FORMED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |