Patent US2316897A successfully refreshed from Google Patents.
US2668752A
Expired / Lapsed
US
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Process for the production of carbon disulfide
Assignee: FMC Corp
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Filing: 1949-11-09
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Granted: 1954-02-09
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Expires: 1969-11-09
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Miller Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:04
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
THE METHOD OF PREPARING CARBON DISULFIDE COMPRISING, CONTACTING A MIXTURE OF SULFUR VAPOR AND HYDROCARBON GAS WITH A CATALYST COMPRISING ZIRCONIA GEL, AT A TEMPERATURE OF APPROXIMATELY 550* TO 700* C.
Claim 2
Independent Claim
31 words
THE METHOD OF PREPARING CARBON DISULFIDE COMPRISING, CONTACTING A MIXTURE OF SULFUR VAPOR AND HYDROCARBON GAS WITH A CATALYST COMPRISING ZIRCONIA GEL, AT A TEMPERATURE OF APPROXIMATELY 550* TO 700* C.
References Cited (Backward Citations)
US2079543A
Cited
US2129732A
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US2330934A
Cited
US2492719A
Cited
US2400465A
Cited
US2442772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |