Patent US5834806A successfully refreshed from Google Patents.
Patent US2882130A successfully refreshed from Google Patents.
US2882130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hydrogen sulfide and carbon bisulfide
Assignee: FMC Corp
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Filing: 1954-08-09
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Granted: 1959-04-14
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 David J Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:19
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/16; C01B17/161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF PRODUCING CARBON BISULFIDE AND HYDROGEN SULFIDE BY THE REACTION OF SULFUR AND SATURATED HYDROCARBON WHICH COMPRISES PASSING SULFUR VAPOR AND HYDROCARBON GASES UNDER A PRESSURE OF AT LEAST 3 ATM. BUT NOT EXCEEDING THE PARTIAL PRESSURE OF SULFUR IN THE REACTION MIXTURE, THROUGH A REACTION CHAMBER CONSTRUCTED OF COMMERCIAL CORROSION RESISTANT MATERIALS AND MAINTAINED AT A TEMPERATURE OF 450* TO 700*C. AT A SPACE VELOCITY OF 80 TO 1000 RECIPROCAL HOURS, TO PROVIDE TIME FOR THE SAID VAPORS TO REACT AT THE SAID TEMPERATURE AND PRESSURE IN THE ABSENCE OF A CATALYST TO PRODUCE CARBON BISULFIDE AND HYDROGEN SULFIDE WITH A CONVERSION OF FROM 40% TO 100% OF THE CARBON IN SAID HYDROCARBON GAS TO CARBON BISULFIDE.
Claim 2
Independent Claim
120 words
THE METHOD OF PRODUCING CARBON BISULFIDE AND HYDROGEN SULFIDE BY THE REACTION OF SULFUR AND SATURATED HYDROCARBON WHICH COMPRISES PASSING SULFUR VAPOR AND HYDROCARBON GASES UNDER A PRESSURE OF AT LEAST 3 ATM. BUT NOT EXCEEDING THE PARTIAL PRESSURE OF SULFUR IN THE REACTION MIXTURE, THROUGH A REACTION CHAMBER CONSTRUCTED OF COMMERCIAL CORROSION RESISTANT MATERIALS AND MAINTAINED AT A TEMPERATURE OF 450* TO 700*C. AT A SPACE VELOCITY OF 80 TO 1000 RECIPROCAL HOURS, TO PROVIDE TIME FOR THE SAID VAPORS TO REACT AT THE SAID TEMPERATURE AND PRESSURE IN THE ABSENCE OF A CATALYST TO PRODUCE CARBON BISULFIDE AND HYDROGEN SULFIDE WITH A CONVERSION OF FROM 40% TO 100% OF THE CARBON IN SAID HYDROCARBON GAS TO CARBON BISULFIDE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |