US3740193A
Expired / Lapsed
US
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Hydrogen production by catalytic steam gasification of carbonaceous materials
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-03-18
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Granted: 1973-06-19
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Expires: 1991-03-18
Abstract
Abstract A HYDROGEN-RICK GASEOUS STREAM IS PRODUCED BY CONTACTING IN A REACTION ZONE OPERATING AT SUPERATMOSPHERIC PRESSURES AND TEMPERATURES BETWEEN 1000 AND 1500*F. A CARBONACEOUS MATERIAL WITH STEAM INTRODUCED IN THE REACTION ZONE AT A RATE BETWEEN 1.0 AND 10.0 WEIGHT H2O/WEIGHT CARBON/HR. IN THE PRESENCE OF A CATALYST COMPOSITION COMPRISING CESIUM CARBONATE.
Inventors
- 👤 R Goldberg
- 👤 C Aldridge
- 👤 D Buben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:07
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/002; C10J3/02; C10J3/20; C10J3/46; C10J3/48; C10J3/482; C10J3/57; C10J3/72; C10J3/78; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0916; C10J2300/092; C10J2300/093; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0973; C10J2300/0976; C10J2300/0983; C10J2300/0986
Claims Analysis
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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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |