Patent US2909583A successfully refreshed from Google Patents.
US2909583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of high octane number fuels
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-10-18
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Granted: 1959-10-20
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Expires: 1977-10-18
Abstract
No abstract record available.
Inventors
- 👤 Bleich Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:00
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN IMPROVED PROCESS FOR THE PRODUCTION OF HIGH OCTANE NUMBER HYDROCARBONS FROM A FEED FRACTION CONTAINING A SUBSTANTIAL PORTION OF NORMAL PENTANE AND NORMAL HEXANE ALONG WITH HIGH OCTANE HYDROCARBON CONSTITUENTS WHICH COMPRISES, CONTACTING SAID FEED FRACTION WITH MOLECULAR SIEVE ZEOLITES IN AN ADSORPTION ZONE SO AS TO ADSORB NORMAL PENTANE AND NORMAL HEXANE IN SAID ZEOLITES WHILE WITHDRAWING AS PRODUCTS UN-ADSORBED HIGH OCTANE HYDROCARBON CONSTITUENTS FROM SAID ADSORPTION ZONE, THEREAFTER RECOVERING NORMAL PENTANE AND NORMAL HEXANE FROM SAID MOLECULAR SIEVE ZEOLITES, PASSING SAID RECOVERED NORMAL PENTANE AND NORMAL HEXANE TO AN ISOMERIZATION ZONE SO AS TO FORM AN ISOMERATE CONTAINING DIMETHYL BUTANES ALONG WITH ISOPENTANE, WITHDRAWING SAID ISOMERATE AND SUBJECTING IT TO FRACTIONATION IN A FRACTIONATION ZONE SO AS TO SEGREGATE AN OVERHEAD FRACTION CONTAINING ISOPENTANE, DIMETHYL BUTANES AND NORMAL
Claim 2
Dependent Claim
131 words
AN IMPROVED PROCESS FOR THE PRODUCTION OF HIGH OCTANE NUMBER HYDROCARBONS FROM A FEED FRACTION CONTAINING A SUBSTANTIAL PORTION OF NORMAL PENTANE AND NORMAL HEXANE ALONG WITH HIGH OCTANE HYDROCARBON CONSTITUENTS WHICH COMPRISES, CONTACTING SAID FEED FRACTION WITH MOLECULAR SIEVE ZEOLITES IN AN ADSORPTION ZONE SO AS TO ADSORB NORMAL PENTANE AND NORMAL HEXANE IN SAID ZEOLITES WHILE WITHDRAWING AS PRODUCTS UN-ADSORBED HIGH OCTANE HYDROCARBON CONSTITUENTS FROM SAID ADSORPTION ZONE, THEREAFTER RECOVERING NORMAL PENTANE AND NORMAL HEXANE FROM SAID MOLECULAR SIEVE ZEOLITES, PASSING SAID RECOVERED NORMAL PENTANE AND NORMAL HEXANE TO AN ISOMERIZATION ZONE SO AS TO FORM AN ISOMERATE CONTAINING DIMETHYL BUTANES ALONG WITH ISOPENTANE, WITHDRAWING SAID ISOMERATE AND SUBJECTING IT TO FRACTIONATION IN A FRACTIONATION ZONE SO AS TO SEGREGATE AN OVERHEAD FRACTION CONTAINING ISOPENTANE, DIMETHYL BUTANES AND NORMAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |