Patent US2798034A successfully refreshed from Google Patents.
US2798034A
Expired / Lapsed
US
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Process for recovery of sulfur from elemental-sulfur-bearing ore
Assignee: Chempatents Inc
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Filing: 1953-05-13
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Granted: 1957-07-02
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Expires: 1973-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robert B Egbert
- 👤 Brown David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:51
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/027; C01B17/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR RECOVERING SULFUR FROM CARBON DISULFIDE SOLUTIONS THEREOF WHICH COMPRISES VAPORIZING MOST OF THE CARBON DISULFIDE AT A TEMPERATURE IN THE RANGE OF ABOUT 50 TO 195* C. AND THEN STEAM DISTILLING THE REST OF THE CARBON DISULFIDE THEREFROM AT A TEMPERATURE IN THE RANGE OF 120 TO 159* C.
Claim 2
Dependent Claim
52 words
A PROCESS FOR RECOVERING SULFUR FROM CARBON DISULFIDE SOLUTIONS THEREOF WHICH COMPRISES VAPORIZING MOST OF THE CARBON DISULFIDE AT A TEMPERATURE IN THE RANGE OF ABOUT 50 TO 195* C. AND THEN STEAM DISTILLING THE REST OF THE CARBON DISULFIDE THEREFROM AT A TEMPERATURE IN THE RANGE OF 120 TO 159* C.
References Cited (Backward Citations)
US1409338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |