Patent US3470587A successfully refreshed from Google Patents.
Patent US3079233A successfully refreshed from Google Patents.
US3079233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hydrogen sulfide and carbon bisulfide
Assignee: FMC Corp
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Filing: 1960-07-01
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Granted: 1963-02-26
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Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 Carroll J Wenzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:34
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/16; C01B17/161; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
THE METHOD OF PRODUCING CARBON BISULFIDE AND HYDROGEN SULFIDE BY THE REACTION OF SULFUR AND SATURATED HYDROCARBONS, WHICH COMPRISES PASSING SULFUR VAPOR AND HYDROCARBON GAS THROUGH A HEATING FURNACE HEATED TO A TEMPERATURE OF 450* TO 750*C., MAINTAINING A PRESSURE OF 10 ATM. TO 20 ATM. ON THE GASES IN SAID FURNACE AND MAINTAINING SAID GASES IN CONTACT FOR A PERIOD OF TIME SUFFICIENT TO CONVERT THE MAJOR PORTION OF THE METHANE IN SAID HYDROCARBON GAS INTO HYDROGEN SULFIDE AND CARBON BISULFIDE, PASSING THE FURNACE EXIT GASES THROUGH A FILTER TO REMOVE SOLIDS FROM THE GAS STREAM, SEPARATING THE UNREACTED SULFUR IN THE LIQUID PHASE FROM THE HYDROGEN SULFIDE AND CARBON BISULFIDE IN THE VAPOR PHASE BY CONDENSATION OF SULFUR FROM THE GAS STREAM AT A PRESSURE BETWEEN 9 AND 19 ATM. AND A TEMPERATURE IN EXCESS OF 120*C. AND SEPARATING THE CARBON BISULFIDE IN THE LIQUID PHASE FROM THE HYDROGEN SULFIDE IN THE VAPOR PHASE BY DISTILLATION AND CONDENSATION AT A PRESSURE BETWEEN ABOUT 9 AND 19 ATM. AND A TEMPERATURE IN EXCESS OF 120*C.
Claim 2
Independent Claim
176 words
THE METHOD OF PRODUCING CARBON BISULFIDE AND HYDROGEN SULFIDE BY THE REACTION OF SULFUR AND SATURATED HYDROCARBONS, WHICH COMPRISES PASSING SULFUR VAPOR AND HYDROCARBON GAS THROUGH A HEATING FURNACE HEATED TO A TEMPERATURE OF 450* TO 750*C., MAINTAINING A PRESSURE OF 10 ATM. TO 20 ATM. ON THE GASES IN SAID FURNACE AND MAINTAINING SAID GASES IN CONTACT FOR A PERIOD OF TIME SUFFICIENT TO CONVERT THE MAJOR PORTION OF THE METHANE IN SAID HYDROCARBON GAS INTO HYDROGEN SULFIDE AND CARBON BISULFIDE, PASSING THE FURNACE EXIT GASES THROUGH A FILTER TO REMOVE SOLIDS FROM THE GAS STREAM, SEPARATING THE UNREACTED SULFUR IN THE LIQUID PHASE FROM THE HYDROGEN SULFIDE AND CARBON BISULFIDE IN THE VAPOR PHASE BY CONDENSATION OF SULFUR FROM THE GAS STREAM AT A PRESSURE BETWEEN 9 AND 19 ATM. AND A TEMPERATURE IN EXCESS OF 120*C. AND SEPARATING THE CARBON BISULFIDE IN THE LIQUID PHASE FROM THE HYDROGEN SULFIDE IN THE VAPOR PHASE BY DISTILLATION AND CONDENSATION AT A PRESSURE BETWEEN ABOUT 9 AND 19 ATM. AND A TEMPERATURE IN EXCESS OF 120*C.
References Cited (Backward Citations)
US2492719A
Cited
US2882130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |