US2841536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovery of sulfur from elemental-sulfur bearing ore
Assignee: Chempatents Inc
•
Filing: 1953-01-05
•
Granted: 1958-07-01
•
Expires: 1973-01-05
Abstract
No abstract record available.
Inventors
- 👤 Robert B Egbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:31
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/027; C01B17/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR RECOVERING SULFUR FROM CARBON DISULFIDE SOLUTIONS THEREOF WHICH COMPRISES STEAM DISTILLING THE CARBON DISULFIDE THEREFROM AT A TEMPERATURE IN THE RANGE OF 120 TO 159*C. AND THE CORRESPONDING STEAM PRESSURE.
Claim 2
Dependent Claim
33 words
A PROCESS FOR RECOVERING SULFUR FROM CARBON DISULFIDE SOLUTIONS THEREOF WHICH COMPRISES STEAM DISTILLING THE CARBON DISULFIDE THEREFROM AT A TEMPERATURE IN THE RANGE OF 120 TO 159*C. AND THE CORRESPONDING STEAM PRESSURE.
References Cited (Backward Citations)
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US484963A
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US1672924A
Cited
US1963921A
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US2088190A
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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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |