US3733186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-step controlled flow gasification process
Assignee: Exxon Mobil Corp
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Filing: 1971-04-06
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Granted: 1973-05-15
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Expires: 1991-04-06
Abstract
Abstract IN A SINGLE VESSEL REACTOR A HEAVY HYDROCARBON FUEL IS STRIPPED OF VALUABLE LIGHT HYDROCARBONS AND HEATED TO A TEMPERATURE BETWEEN 1100* AND 1300*F. IN A HEATING ZONE BEFORE A PORTION IS TRANSFERRED TO A GASIFICATION ZONE TO BE SUBSTANTIALLY COMPLETELY CONVERTED TO A HYDROGEN AND CARBON OXIDE-CONTAINING GASEOUS STREAM, THE RATE OF TRANSFER BEING CONTROLLED BY THE PRESSURE DIFFERENTIAL BETWEEN THE TWO ZONES.
Inventors
- 👤 J Zemaitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:28
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/482; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/28; C10G9/32; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; C10J2300/0983; C10J2300/0993
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |