US2704758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrolytic hydrogemnolysis of nitrogen bases
Assignee: Houdry Process Corp
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Filing: 1949-11-22
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Granted: 1955-03-22
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Expires: 1969-11-22
Abstract
No abstract record available.
Inventors
- 👤 John W Wetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/22; C10G31/00; C10G31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD WHICH COMPRISES SUBJECTING A HYDROCARBON OIL FRACTION RICH IN NITROGEN CONTENT AND CONTAINING HETEROCYCLIC- NITROGEN COMPOUNDS INCLUDING HIGHER HOMOLOGUES OF QUINOLINE AND PYRIDINE, TO PYROLYTIC HYDROGENOLYSIS IN THE ABSENCE OF CATALYST IN A REACTION ZONE UNDER SELECTED CONDITIONS FAVOURING CARBON-CARBON SCISSION WITHOUT EXCESSIVE DESTRUCTION OF THE N-HETERO RING STRUCTURES PRESENT IN SUCH FRACTION, SAID SELECTED CONDITIONS INCLUDING TEMPERATURES IN THE RANGE OF 800-1200*F., A TOTAL PRESSURE OF ABOUT 500-3000 POUNDS PER SQUARE INCH GAUGE, RELATIVELY HIGH THROUGHOUT RATES OF THE OIL CORRESPONDING TO A RESIDENCE TIME IN THE REACTION ZONE OF LESS THAN 15 MINUTES, AND THE ADDITION OF HYDROGEN IN AN AMOUNT CORRESPONDING TO 5-20 MOLES PER MOLE OF OIL FRACTION CHARGED.
Claim 2
Independent Claim
115 words
THE METHOD WHICH COMPRISES SUBJECTING A HYDROCARBON OIL FRACTION RICH IN NITROGEN CONTENT AND CONTAINING HETEROCYCLIC- NITROGEN COMPOUNDS INCLUDING HIGHER HOMOLOGUES OF QUINOLINE AND PYRIDINE, TO PYROLYTIC HYDROGENOLYSIS IN THE ABSENCE OF CATALYST IN A REACTION ZONE UNDER SELECTED CONDITIONS FAVOURING CARBON-CARBON SCISSION WITHOUT EXCESSIVE DESTRUCTION OF THE N-HETERO RING STRUCTURES PRESENT IN SUCH FRACTION, SAID SELECTED CONDITIONS INCLUDING TEMPERATURES IN THE RANGE OF 800-1200*F., A TOTAL PRESSURE OF ABOUT 500-3000 POUNDS PER SQUARE INCH GAUGE, RELATIVELY HIGH THROUGHOUT RATES OF THE OIL CORRESPONDING TO A RESIDENCE TIME IN THE REACTION ZONE OF LESS THAN 15 MINUTES, AND THE ADDITION OF HYDROGEN IN AN AMOUNT CORRESPONDING TO 5-20 MOLES PER MOLE OF OIL FRACTION CHARGED.
References Cited (Backward Citations)
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Cited
US1965828A
Cited
US2035583A
Cited
US2237541A
Cited
US2302655A
Cited
US2432644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |