US3689403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fcc catalyst section control
Assignee: Mobil Oil AS
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Filing: 1970-12-07
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Granted: 1972-09-05
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Expires: 1990-12-07
Abstract
Abstract THE SPECIFIC EMBODIMENTS PROVIDE FOR CONTROLLING A CATALYST SECTION OF A FLUID CATALYTIC CRACKING SYSTEM BY ADJUSTING THE FLOW RATE OF AN OXYGEN-CONTAINING GAS TO A REGENERATOR IN RESPONSE TO A DEVIATION OF A REACTOR TEMPERATURE FROM A PREDETERMINED REACTOR TEMPERATURE, AND BY ADJUSTING THE REGENERATED CATALYST FLOW RATE IN RESPONSE TO A DEVIATION OF THE FLUE GAS TEMPERATURE FROM A PREDETERMINED FLUE GAS TEMPERATURE.
Inventors
- 👤 Bernard C Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:36
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; C10G11/187; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; Y; Y10; Y10S; Y10S208/00; Y10S208/01
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |