US3558479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pressure regenerative reforming process for high paraffin feeds
Assignee: Chevron USA Inc
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Filing: 1969-06-16
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Granted: 1971-01-26
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Expires: 1989-06-16
Abstract
Abstract A NAPHTHA FEED CONTAINING AT LEAST 50 VOLUME PERCENT PARAFFINS IS REFORMED TO HIGH OCTANE GASOLINE PRODUCTS AT A PRESSURE LESS THAN ABOUT 100 P.S.I.G IN THE PRESENCE OF HYDROGEN WITH A CATALYST COMPRISING FROM 0.01 TO 3 WEIGHT PERCENT PLATINUM AND 0.01 TO 5 WEIGHT PERCENT RHENIUM ASSOCIATED WITHA POROUS INORGANIC OXIDE. THE REFORMING PROCESS IS PEROIDICALLY DISCONTINUED TO PERMIT REGENERATION OF THE CATALYSTS TO RESTORE SUBSTANTIALLY ITS INITIAL ACTIV-ITY.
Inventors
- 👤 Robert L Jacobson
- 👤 Robert D Vanselow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:41
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |