US2970893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lime and hydropgen sulfids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-06-19
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Granted: 1961-02-07
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Expires: 1978-06-19
Abstract
No abstract record available.
Inventors
- 👤 Prentiss S Viles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:57
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/16; C01B17/164; C01F; C01F11/00; C01F11/02; C01F11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD FOR PRODUCING LIME AND HYDROGEN SULFIDE WHICH COMPRISES CONTACTING FINELY DIVIDED CALCIUM SULFATE WITH A NATURAL GAS HYDROCARBON AND STEAM IN THE PRESENCE OF COBALT MOLYBDATE CATALYST AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 1200* TO 1400*F. IN THE ABSENCE OF FREE OXYGEN, THE GAS AND STEAM BEING PRESENT IN AMOUNTS IN EXCESS OF THEORETICAL, TO FORM LIME AND HYDROGEN SULFIDE-CONTAINING GAS, SEPARATING AND RECOVERING SAID HYDROGEN SULFIDE FROM SAID GAS IN AN ABSORPTION ZONE,
Claim 2
Independent Claim
78 words
A METHOD FOR PRODUCING LIME AND HYDROGEN SULFIDE WHICH COMPRISES CONTACTING FINELY DIVIDED CALCIUM SULFATE WITH A NATURAL GAS HYDROCARBON AND STEAM IN THE PRESENCE OF COBALT MOLYBDATE CATALYST AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 1200* TO 1400*F. IN THE ABSENCE OF FREE OXYGEN, THE GAS AND STEAM BEING PRESENT IN AMOUNTS IN EXCESS OF THEORETICAL, TO FORM LIME AND HYDROGEN SULFIDE-CONTAINING GAS, SEPARATING AND RECOVERING SAID HYDROGEN SULFIDE FROM SAID GAS IN AN ABSORPTION ZONE,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |