US3725249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous reforming-regeneration 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 CONTINUOUS REFORMING-REGENERATION PROCESS EMPLOYING A HALOGEN-CONTAINING PLATINUM CATALYST PREFERABLY COMPRISING ONE OR MORE PROMOTER METALS WHEREIN CATALYST ACTIVITY IS MAINTAINED AT A PREDETERMINED LEVEL BY CONTINUOUS REGENERATION THEREOF WITHOUT OF REMOVAL OF ANY REACTOR FROM THE PROCESS STREAM. THE METHOD INCLUDES THE CONTINUOUS REDUCTION AND SULFIDING OF THE CATALYST PRIOR TO CONTACT WITH THE REACTANT STREAM, THE REDUCTION AND SULFIDING BEING EFFECTED IN A CONFINED ZONE IN INDIRECT HEAT EXCHANGE RELATIONSHIP WITH THE PREHEATED REACTANT STREAM CHARGED TO THE REFORMING PROCESS.
Inventors
- 👤 K Vesely
- 👤 A Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:43
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/12; B; B01; B01J; B01J23/00; B01J23/90; B01J23/96; B01J8/00; B01J8/08; B01J8/12; B01J8/125
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) | 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 |