US2769753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination process for catalytic hydrodesulfurization and reforming of high sulfur hydrocarbon mixtures
Assignee: Pure Oil Co
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Filing: 1953-06-03
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Granted: 1956-11-06
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Expires: 1973-06-03
Abstract
No abstract record available.
Inventors
- 👤 Le Roi E Hutchings
- 👤 Milton M Marisic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/04; C10G65/08; C10G69/00; C10G69/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS FOR IMPROVING THE MOTOR FUEL CHARACTERISTICS AND DECREASING THE SULFUR CONTENT AND AROMATICITY OF FRACTIONS OBTAINED FROM HIGH SULFUR CONTENT HYDROCARBON MIXTURES WHICH COMPRISES SEPARATING SAID HYDROCARBON MIXTURES INTO A LIGHT FRACTION HAVING AN INITIAL BOILING POINT OF ABOUT 200* F. AND HEAVY FRACTION HAVING AN INITIAL BOILING POING OF ABOUT 350* F., SUBJECTING SAID LIGHT FRACTION TO CATALYTIC REFORMING AND SEPARATING A REFORMED NAPHTHA BLENDING STOCK, SUBJECTING SAID HEAVY FRAACTION TO HYDRODESULFURIZATION TO PRODUCE A HYDRODESULFURIZED PRODUCT, SUBJECTING SAID HYDRODESULFURIZED PRODUCT TO HYDROGENATION AT ABOUT 300* TO 700* F. UNDER CONDITIONS TO DEAROMATIZE SAME AND FRACTIONATING THE HYDROGENATED PRODUCTS SO PRODUCED TO YIELD FRACTIONS OF IMPROVED CETANE NUMBER AND LOW AROMATIC CONTENT.
Claim 2
Dependent Claim
115 words
THE PROCESS FOR IMPROVING THE MOTOR FUEL CHARACTERISTICS AND DECREASING THE SULFUR CONTENT AND AROMATICITY OF FRACTIONS OBTAINED FROM HIGH SULFUR CONTENT HYDROCARBON MIXTURES WHICH COMPRISES SEPARATING SAID HYDROCARBON MIXTURES INTO A LIGHT FRACTION HAVING AN INITIAL BOILING POINT OF ABOUT 200* F. AND HEAVY FRACTION HAVING AN INITIAL BOILING POING OF ABOUT 350* F., SUBJECTING SAID LIGHT FRACTION TO CATALYTIC REFORMING AND SEPARATING A REFORMED NAPHTHA BLENDING STOCK, SUBJECTING SAID HEAVY FRAACTION TO HYDRODESULFURIZATION TO PRODUCE A HYDRODESULFURIZED PRODUCT, SUBJECTING SAID HYDRODESULFURIZED PRODUCT TO HYDROGENATION AT ABOUT 300* TO 700* F. UNDER CONDITIONS TO DEAROMATIZE SAME AND FRACTIONATING THE HYDROGENATED PRODUCTS SO PRODUCED TO YIELD FRACTIONS OF IMPROVED CETANE NUMBER AND LOW AROMATIC CONTENT.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |