US2905629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature conversion of heavy oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-04-13
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Granted: 1959-09-22
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Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Brook I Smith
- 👤 Harold W Scheeline
- 👤 Edward D Boston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:30
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A PROCESS FOR PRODUCING HIGH YIELDS OF DESIRED HYDROCARBON CHEMICALS, WHICH COMPRISES FEEDING A HEAVY HYDROCARBON OIL INTO A MASS OF HOT INERT SOLIDS MAINTAINED IN A REACTION ZONE AT A TEMPERATURE ABOVE 1150*F., CONVERTING SAID HYDROCARBON OIL BY CONTROLLING THE LEVEL OF CONVERSION AT A CONVERSION LEVEL OF BETWEEN 4 AND 10 S.C.F. OF DRY GAS(C3-) PER POUND OF COKE-FREE FEED, A REACTION TIME IN THE RANGE OF 0.05 TO 1.0 SECOND BEING EMPLOYED AND NON-HYDROCARBON GAS BEING SUPPLIED TO SAID REACTION ZONE TO MAINTAIN A HYDROCARBON PARTIAL PRESSURE OF LESSS THAN 20 P.S.I.A. WITHIN SAID REACTION ZONE, THEREBY PRODUCING OPTIMUM ECONOMIC YIELDS OF C4-C5 DIOLEFINS, C6-C7 RESIN-FORMERS AND LOWER AROMATICS.
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |