US3660271A
Expired / Lapsed
US
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Serial reforming with platinum on a non acidic support and platinum-rhenium on an acidic support
Assignee: Atlantic Richfield Co
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Filing: 1970-03-20
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Granted: 1972-05-02
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Expires: 1990-03-20
Abstract
Abstract A PROCESS FOR THE CATALYTIC REFORMING OF NAPHTHENE AND PARAFFIN-CONTAINING HYDROCARBONS TO IMPROVE THEIR OCTANE RATING IS DISCLOSED WHICH INVOLVES THE USE OF A SERIES OF CATALYTIC REACTION ZONES OF WHICH ONE OF THE FIRST CONTAINS A SUPPORTED PLATINUM GROUP METAL-CONTAINING, LOW ACIDITY CATALYST WHICH IS SUBSTANTIALLY DEVOID OF RHENIUM AND WHICH SERVES TO DEHYDROGENATE NAPHTHENES, AND ONE OF THE LAST OF WHICH ZONES CONTAINS A SUPPORTED PLATINUM GROUP METAL AND RHENIUM-CONTAINING CATALYST OF HIGHER ACIDITY WHICH SERVES TO DEHYDROCYCLIZE PARAFFINS.
Inventors
- 👤 Carl D Keith
- 👤 George P Masologites
- 👤 John Mooi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |