US3679563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Houdriflow cracking process
Assignee: Sunoco Inc
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Filing: 1970-08-07
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Granted: 1972-07-25
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Expires: 1990-08-07
Abstract
Abstract IN AN AIRLIFT CATALYTIC CRACKING SYSTEM USING A HIGHLY ACTIVE ZEOLITE CATALYST WHERE THE HYDROCARBON IS CONTACTED BY FALLING CATALYST WHICH FORMS A BED ON A SUPPORTING GRID, THE IMPROVEMENT OF FEEDING HYDROCARBON VAPORS TO THE CRACKING ZONE AND FEEDING A LIQUID PORTION OF THE HYDROCARBON TO A LOWER PORTION OF SAID CATALYST BED WHEREBY COKING ON THE CATALYST IN THE CRACKING ZONE IS REDUCED, AND DEACTIVATION OF THE CATALYST IN THE CRACKING ZONE IS AMELIORATED AND CONVERSION AND YIELDS OF GASOLINE ARE INCREASED.
Inventors
- 👤 Andre W Pollock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:05
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |