US3287253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reforming a naphtha fraction in three stages to produce a high octane gasoline
Assignee: Standard Oil Co
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Filing: 1965-12-20
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Granted: 1966-11-22
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Keith W Mchenry
- 👤 Herman S Seelig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:40
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A PROCESS FOR REFORMING PETROLEUM HYDROCARBONS BOILING IN THE GASOLINE AND NAPHTHA RANGE BY PASSING PREHEATED HYDROCARBON VAPORS AND RECYCLED HYDROGENCONTAINING GAS THROUGH A PLURALITY OF STAGES UNDER REFORMING CONDITIONS, THE IMPROVEMENT WHICH RESULTS IN GREATER PRODUCT SELECTIVITY AND WHICH COMPRISES CONTACTING IN AN INITIAL STAGE UNDER REFORMING CONDITIONS THE PREHEATED HYDROCARBONS AND RECYCLED HYDROCARBON-CONTAINING GAS WITH A CATALYST WHICH COMPRISES A DEHYDROGENATION COMPONENT ON A HALOGEN-NON-RETAINING, NON-ACIDIC SUPPORT AND WHICH PROMOTES THE DEHYDROGENATION OF NAPHTHENES; CONTACTING IN AN INTERMEDIATE STAGE UNDER REFORMING CONDITIONS THE EFFLUENT FROM SAID INITIAL STAGE WITH A CATALYST WHICH COMPRISES A DEHYDROGENATION COMPONENT ON AN ACIDIC SUPPORT AND WHICH PROMOTES THE ISOMERIZATION OF CYCLOPENTANES, THE DEHYDROGENATION OF RESULTANT CYCLOHEXANES, AND THE ISOMERIZATION OF PARAFFINS; CONTACTING IN A FINAL STAGE THE EFFLUENT FROM SAID INTERMEDIATE STAGE UNDER REFORMING CONDITIONS WITH A CATALYST WHICH COMPRISES A DEHYDROGENATION COMPONENT ON AN ALUMINA-CONTAINING SUPPORT AND WHICH PROMOTES THE DE-
Claim 2
Dependent Claim
151 words
IN A PROCESS FOR REFORMING PETROLEUM HYDROCARBONS BOILING IN THE GASOLINE AND NAPHTHA RANGE BY PASSING PREHEATED HYDROCARBON VAPORS AND RECYCLED HYDROGENCONTAINING GAS THROUGH A PLURALITY OF STAGES UNDER REFORMING CONDITIONS, THE IMPROVEMENT WHICH RESULTS IN GREATER PRODUCT SELECTIVITY AND WHICH COMPRISES CONTACTING IN AN INITIAL STAGE UNDER REFORMING CONDITIONS THE PREHEATED HYDROCARBONS AND RECYCLED HYDROCARBON-CONTAINING GAS WITH A CATALYST WHICH COMPRISES A DEHYDROGENATION COMPONENT ON A HALOGEN-NON-RETAINING, NON-ACIDIC SUPPORT AND WHICH PROMOTES THE DEHYDROGENATION OF NAPHTHENES; CONTACTING IN AN INTERMEDIATE STAGE UNDER REFORMING CONDITIONS THE EFFLUENT FROM SAID INITIAL STAGE WITH A CATALYST WHICH COMPRISES A DEHYDROGENATION COMPONENT ON AN ACIDIC SUPPORT AND WHICH PROMOTES THE ISOMERIZATION OF CYCLOPENTANES, THE DEHYDROGENATION OF RESULTANT CYCLOHEXANES, AND THE ISOMERIZATION OF PARAFFINS; CONTACTING IN A FINAL STAGE THE EFFLUENT FROM SAID INTERMEDIATE STAGE UNDER REFORMING CONDITIONS WITH A CATALYST WHICH COMPRISES A DEHYDROGENATION COMPONENT ON AN ALUMINA-CONTAINING SUPPORT AND WHICH PROMOTES THE DE-
References Cited (Backward Citations)
US2969319A
Cited
US3007862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |