US2945804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroformate feed improved by adsorption of normal paraffins
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-03-11
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Granted: 1960-07-19
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Charles E Hemminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:56
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; C10G; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD FOR UPGRADING A HEAVY VIRGIN NAPHTHA FRACTION BOILING ABOVE ABOUT 160*-175*F. TO A HIGH OCTANE GASOLINE PRODUCT HAVING A BALANCED HIGH OCTANE NUMBER RATING FOR ITS LOWER BOILING AS WELL AS FOR ITS HIGHER BOILING COMPONENTS, WHICH COMPRISES VAPORIZING THE HEAVY VIRGIN NAPHTHA FRACTION, PASSING THE RESULTING VAPORS OF SAID FRACTION THROUGH A BED OF MOLECULAR SIEVES HAVING A PORE DIAMETER OF ABOUT 5 ANGSTROM UNITS WHICH SELECTIVELY ADSORB NORMAL PARAFFINS FROM SAID VAPORS, RECOVERING A REMAINING VAPOR STREAM OF THE NAPHTHA FRACTION ESSENTIALLY FREE OF NORMAL PARAFFINS, HYDROFORMING THE THUS RECOVERED NAPHTHA HYDROCARBONS FREED OF THE NORMAL PARAFFINS IN SAID REMAINING VAPOR STREAM BY CONTACT WITH A HYDROFORMING CATALYST IN THE PRESENCE OF HYDROGEN AT FROM 750*-1050*F. AND AT PRESSURES OF FROM 50-1000 P.S.I.G. FOR A PERIOD SUFFICIENT TO RAISE THE OCTANE NUMBER OF THE HYDROFORMING PRODUCT TO ABOVE ABOUT 95
Claim 2
Independent Claim
144 words
A METHOD FOR UPGRADING A HEAVY VIRGIN NAPHTHA FRACTION BOILING ABOVE ABOUT 160*-175*F. TO A HIGH OCTANE GASOLINE PRODUCT HAVING A BALANCED HIGH OCTANE NUMBER RATING FOR ITS LOWER BOILING AS WELL AS FOR ITS HIGHER BOILING COMPONENTS, WHICH COMPRISES VAPORIZING THE HEAVY VIRGIN NAPHTHA FRACTION, PASSING THE RESULTING VAPORS OF SAID FRACTION THROUGH A BED OF MOLECULAR SIEVES HAVING A PORE DIAMETER OF ABOUT 5 ANGSTROM UNITS WHICH SELECTIVELY ADSORB NORMAL PARAFFINS FROM SAID VAPORS, RECOVERING A REMAINING VAPOR STREAM OF THE NAPHTHA FRACTION ESSENTIALLY FREE OF NORMAL PARAFFINS, HYDROFORMING THE THUS RECOVERED NAPHTHA HYDROCARBONS FREED OF THE NORMAL PARAFFINS IN SAID REMAINING VAPOR STREAM BY CONTACT WITH A HYDROFORMING CATALYST IN THE PRESENCE OF HYDROGEN AT FROM 750*-1050*F. AND AT PRESSURES OF FROM 50-1000 P.S.I.G. FOR A PERIOD SUFFICIENT TO RAISE THE OCTANE NUMBER OF THE HYDROFORMING PRODUCT TO ABOVE ABOUT 95
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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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |