Patent US2712984A successfully refreshed from Google Patents.
US2712984A
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Method for carbon bisulfide production
Assignee: Dow Chemical Co
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Filing: 1951-05-28
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Granted: 1955-07-12
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Expires: 1971-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Guebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:10
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD OF PRODUCING CARBON BISULFIDE THAT COMPRISES CONTACTING A VAPOR PHASE MIXTURE OF SULFUR AND A PARAFFINIC HYDROCARBON WITH A CATALYST CONSISTING OF PARTICLES OF AN EXTRACTED HIGH SILICA GLASS CONTAINING AT LEAST 90 PER CENT BY WEIGHT SILICA PROMOTED BY COBALTOUS OXIDE AT A TEMPERATURE FROM 500* TO 700* C.
Claim 2
Independent Claim
52 words
A METHOD OF PRODUCING CARBON BISULFIDE THAT COMPRISES CONTACTING A VAPOR PHASE MIXTURE OF SULFUR AND A PARAFFINIC HYDROCARBON WITH A CATALYST CONSISTING OF PARTICLES OF AN EXTRACTED HIGH SILICA GLASS CONTAINING AT LEAST 90 PER CENT BY WEIGHT SILICA PROMOTED BY COBALTOUS OXIDE AT A TEMPERATURE FROM 500* TO 700* C.
References Cited (Backward Citations)
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US2079543A
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US2187393A
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US2330934A
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US2369377A
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US2428727A
Cited
US2565215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |