US2661267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of carbon disulfide
Assignee: FMC Corp
•
Filing: 1948-08-30
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Granted: 1953-12-01
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Expires: 1968-08-30
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Miller Elmer
- 👤 Hennig Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:16
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS FOR PRODUCING CARBON DISULFIDE BY REACTION OF HYDROCARBON GASES CONTAINING A SUBSTANTIAL AMOUNT OF C3 AND HIGHER HYDROCARBONS AND SULFUR AT ABOUT 1112* F. IN THE PRESENCE OF A CATALYST CAPABLE OF PROMOTING CARBON DISULFIDE FORMATION, WHICH COMPRISES SEPARATELY PREHEATING SAID HYDROCARBON GASES TO REACTION TEMPERATURE, CONTROLLING THE RESIDENCE TIME AT SAID TEMPERATURE TO PREVENT SUBSTANTIAL CRACKING OF SAID HYDROCARBON GAS, SEPARATELY PREHEATING SAID SULFUR TO A TEMPERATURE SUFFICIENT SO THAT WHEN MIXED WITH SAID PREHEATED GAS AND CONTACTED WITH CATALYST THE REACTION TEMPERATURE OF THE MIXTURE WILL BE ABOVE 112* F., SUBSTANTIALLY SIMULTANEOUSLY MIXING SAID PREHEATED HYDROCARBON GAS WITH THE PREHEATED SULFUR AND
Claim 2
Dependent Claim
106 words
THE PROCESS FOR PRODUCING CARBON DISULFIDE BY REACTION OF HYDROCARBON GASES CONTAINING A SUBSTANTIAL AMOUNT OF C3 AND HIGHER HYDROCARBONS AND SULFUR AT ABOUT 1112* F. IN THE PRESENCE OF A CATALYST CAPABLE OF PROMOTING CARBON DISULFIDE FORMATION, WHICH COMPRISES SEPARATELY PREHEATING SAID HYDROCARBON GASES TO REACTION TEMPERATURE, CONTROLLING THE RESIDENCE TIME AT SAID TEMPERATURE TO PREVENT SUBSTANTIAL CRACKING OF SAID HYDROCARBON GAS, SEPARATELY PREHEATING SAID SULFUR TO A TEMPERATURE SUFFICIENT SO THAT WHEN MIXED WITH SAID PREHEATED GAS AND CONTACTED WITH CATALYST THE REACTION TEMPERATURE OF THE MIXTURE WILL BE ABOVE 112* F., SUBSTANTIALLY SIMULTANEOUSLY MIXING SAID PREHEATED HYDROCARBON GAS WITH THE PREHEATED SULFUR AND
References Cited (Backward Citations)
US2187393A
Cited
US2428727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |