US3647680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous reforming-regeneration process
Assignee: Universal Oil Products Co
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Filing: 1969-09-25
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Granted: 1972-03-07
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Expires: 1989-09-25
Abstract
Abstract A METHOD OF OPERATING A CONTINUOUS REFORMING-REGENERATION PROCESS COMPRISING ONE OR MORE REFORMING REACTORS AND EMPLOYING A PLATINUM CATALYST WHEREIN CATSLYST ACTIVITY IS MAINTAINED AT A PREDETERMINED LEVEL BY CONTINUOUS REGENERATION THEREOF WITHOUT THE REMOVAL OF ANY REACTOR FROM THE PROCESS STREAM.
Inventors
- 👤 Arthur R Greenwood
- 👤 Kenneth D Vesely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:36
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J8/125; B01J23/00; B01J23/90; B01J23/96; C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/12
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 |