US3705094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serial reforming with platinum-rhenium and platinum-non rhenium catalysts
Assignee: Individual
•
Filing: 1970-03-20
•
Granted: 1972-12-05
•
Expires: 1990-03-20
Abstract
Abstract THE DISCLOSURE IS DIRECTED TO SYSTEMS FOR THE CATALYTIC REFORMING OF GASOLINE BOILING RANGE HYDROCARBONS TO IMPROVE THEIR OCTANE RATING. REFORMING IS CONDUCTED IN THE PRESENCE OF MOLECULAR HYDROGEN AND PLATINUM GROUP METAL-TYPE CATALYSTS DISPOSED IN A PLURALITY OF FIXED BED REACTION ZONES. IN AN INITIAL DEHYDROGENATION REACTION ZONE THE CATALYST CONTAINS A PLATINUM GROUP METAL AND RHENIUM ON AN ALUMINA SUPPORT WHILE IN A SUBSEQUENT PARAFFIN DEHYDROCYCLIZATION PART OF THE SYSTEM THE CATALYST CONTAINS A PLATINUM GROUP METAL ON ALUMINA. IN A SPECIAL OPERATION THE INLET TEMPERATURES OF THE REACTORS CAN BE CONTROLLED WITH RESPECT TO THE LENGTH OF THE TOTAL REFORMING CYCLE.
Inventors
- 👤 Carl D Keith
- 👤 William C Pfefferle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:54
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |