US3725248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a reforming process
Assignee: Universal Oil Products Co
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Filing: 1971-12-14
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Granted: 1973-04-03
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Expires: 1991-12-14
Abstract
Abstract A METHOD OF OPERATING A REFORMING PROCESS EMPLOYING A PLATINUM GROUP METAL CATALYST. A MULTIPLE REACTOR SYSTEM COMPRISING THE SIDE-BY-SIDE REACTORS IS EMPLOYED, EACH REACTOR CONTAINING A DENSE-PHASE MOVING CATALYST BED. THE METHOD OF THIS INVENTION ENABLES PROCESSING OF THE CATALYST THROUGH THE REACTOR SYSTEM IN SERIES FLOW, ALL REACTORS REMAINING ON STREAM AT REFORMING CONDITIONS. THE METHOD PROVIDES FOR RELATIVELY FREQUENT REGENERATION, AND CATALYST ACTIVITY IS MAINTAINED AT A PREDETERMINED HIGH LEVEL WITHOUT RESORT TO INCREASINGLY SEVERE REFORMING CONDITIONS.
Inventors
- 👤 A Greenwood
- 👤 K Vesely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J8/125; B01J23/00; B01J23/90; B01J23/96
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |