US2890997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the quality of catalytic gasoline
Assignee: Sunoco Inc
•
Filing: 1955-06-29
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Granted: 1959-06-16
•
Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hirschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:14
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A PROCESS FOR IMPROVING THE OCTANE NUMBER OF CATALYTICALLY CRACKED GASOLINE WHICH COMPRISES DISTILLING A CATALYTICALLY CRACKED GASOLINE COMPRISING OLEFINS TO RECOVER A LOW-BOILINE FRACTION, AN INTERMEDIATE FRACTION POOR IN AROMATICS, AND A HIGHER BOILING FRACTION RICH IN AROMATICS, SAID HIGHER BOILING FRACTION BOILING ABOVE ABOUT 260*F., THE CUT POINT BETWEEN THE LOW-BOILING FRACTION AND THE INTERMEDIATE FRACTION BEING SO SELECTED THAT THE RATIO OF OLEFINS TO NAPHTHENES AND CYCLOOLEFINS IN THE INTERMEDIATE FRACTION AND THE HIGHER BOILING FRACTION IS SUCH THAT WHEN THE INTERMEDIATE FRACTION AND AN AROMATICS-LEAN PORTION OF THE HIGHER BOILING FRACTION ARE COMBINED AND SUBJECTED TO REFORMING THERE WILL BE A NET PRODUCTION OF HYDROGEN; SEPARATING THE HIGHER BOILING FRACTION INTO AN AROMATICS-RICH PORTION AND AN AROMATICS-LEAN PORTION; MIXING THE AROMATICS-LEAN PORTION WITH THE INTERMEDIATE FRACTION; PASSING THE MIXTURE TO A REFORMER AND THEREIN CONTACTING IT WITH A CATALYST COMPRISING A HYDROGENATION-DEHYDROGENATION COMPONENT, IN
Claim 2
Dependent Claim
148 words
A PROCESS FOR IMPROVING THE OCTANE NUMBER OF CATALYTICALLY CRACKED GASOLINE WHICH COMPRISES DISTILLING A CATALYTICALLY CRACKED GASOLINE COMPRISING OLEFINS TO RECOVER A LOW-BOILINE FRACTION, AN INTERMEDIATE FRACTION POOR IN AROMATICS, AND A HIGHER BOILING FRACTION RICH IN AROMATICS, SAID HIGHER BOILING FRACTION BOILING ABOVE ABOUT 260*F., THE CUT POINT BETWEEN THE LOW-BOILING FRACTION AND THE INTERMEDIATE FRACTION BEING SO SELECTED THAT THE RATIO OF OLEFINS TO NAPHTHENES AND CYCLOOLEFINS IN THE INTERMEDIATE FRACTION AND THE HIGHER BOILING FRACTION IS SUCH THAT WHEN THE INTERMEDIATE FRACTION AND AN AROMATICS-LEAN PORTION OF THE HIGHER BOILING FRACTION ARE COMBINED AND SUBJECTED TO REFORMING THERE WILL BE A NET PRODUCTION OF HYDROGEN; SEPARATING THE HIGHER BOILING FRACTION INTO AN AROMATICS-RICH PORTION AND AN AROMATICS-LEAN PORTION; MIXING THE AROMATICS-LEAN PORTION WITH THE INTERMEDIATE FRACTION; PASSING THE MIXTURE TO A REFORMER AND THEREIN CONTACTING IT WITH A CATALYST COMPRISING A HYDROGENATION-DEHYDROGENATION COMPONENT, IN
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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) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |