Patent US2651597A successfully refreshed from Google Patents.
US2651597A
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Process for improving the octane number of light naphthas
Assignee: Standard Oil Development Co
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Filing: 1950-01-18
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Granted: 1953-09-08
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Expires: 1970-01-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Corner
- 👤 Fred B Fischl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:01
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
PROCESS FOR IMPROVING THE ANTI-KNOCK VALUE OF LIGHT VIRGIN NAPHTHA AS MOTOR FUEL WHICH COMPRISES FRACTIONATING THE NAPHTHA INTO A HEXANE FRACTION BOILING UP TO 158* F., AND AN ALKYLCYCLOPENTANE FRACTION BOILING 158 TO 200* F., A NORMAL HEPTANE FRACTION BOILING 200 TO 211* F., AND A HEAVY NAPHTHA FRACTION BOILING ABOVE 211* F., ISOMERIZING THE HEXANE FRACTION, ISOMERIZING THE ALKYCYCLOPENTANE FRACTION, COMBINING THE ISOMERIZED ALKYLCYCLOPENTANE FRACTION WITH THE HEAVY NAPHTHA FRACTION, HYDROFORMING THE COMBINED FRACTION, AROMATIZING THE NORMAL HEPTANE FRACTION AND COMBINING THE ISOMERIZED NORMAL HEXANE FRACTION, AND THE ARMOMATIXED AND HYDROFORMED FRACTIONS AS THE FINAL IMPROVED MOTOR FUEL.
Claim 2
Dependent Claim
100 words
PROCESS FOR IMPROVING THE ANTI-KNOCK VALUE OF LIGHT VIRGIN NAPHTHA AS MOTOR FUEL WHICH COMPRISES FRACTIONATING THE NAPHTHA INTO A HEXANE FRACTION BOILING UP TO 158* F., AND AN ALKYLCYCLOPENTANE FRACTION BOILING 158 TO 200* F., A NORMAL HEPTANE FRACTION BOILING 200 TO 211* F., AND A HEAVY NAPHTHA FRACTION BOILING ABOVE 211* F., ISOMERIZING THE HEXANE FRACTION, ISOMERIZING THE ALKYCYCLOPENTANE FRACTION, COMBINING THE ISOMERIZED ALKYLCYCLOPENTANE FRACTION WITH THE HEAVY NAPHTHA FRACTION, HYDROFORMING THE COMBINED FRACTION, AROMATIZING THE NORMAL HEPTANE FRACTION AND COMBINING THE ISOMERIZED NORMAL HEXANE FRACTION, AND THE ARMOMATIXED AND HYDROFORMED FRACTIONS AS THE FINAL IMPROVED MOTOR FUEL.
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |