Patent US3647679A successfully refreshed from Google Patents.
US3647679A
Expired / Lapsed
US
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Process for reforming heavy naphtha
Assignee: Sunoco Inc
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Filing: 1970-06-25
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Granted: 1972-03-07
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Expires: 1990-06-25
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR REFORMING HEAVY NAPHTHA WHEREIN A NAPTHTA FEED BOILING IN THE RANGE OF BELOW ABOUT 390*F. IS REFORMED IN A SERIES OF REACTORS WHILE A NAPHTHA FRACTION BOILING BETWEEN ABOUT 390* TO 415*F. IS ADDED TO THE FEED INTO THE LAST REACTORS OF THE SERIES. THE LAST REACTORS ARE PROVIDED WITH AN EXCESS OF HYDROGEN. THE INVENTION PROVIDES AN INCREASED AMOUNT OF REFORMATE OF INCREASED OCTANE. THE INVENTION ALSO PROVIDES FOR THE UPGRADING OF A HEAVY NAPHTHA FRACTION WITHOUT EXCESSIVE COKE FORMATION.
Inventors
- 👤 Merritt C Kirk Jr
- 👤 Ernest W Dobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:41
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; C10G35/00; C10G35/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |