Patent US3591485A successfully refreshed from Google Patents.
US3591485A
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Combination catalytic cracking process
Assignee: Phillips Petroleum Co
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Filing: 1969-09-10
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Granted: 1971-07-06
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Expires: 1989-09-10
Abstract
Abstract IN A SYSTEM WHEREIN A DIRTY OIL FLUID CATALYTIC CRACKING SYSTEM AND A CLEAN OIL CATALYTIC CRACKING SYSTEM ARE OPERATED, THE SLURRY OIL FORM THE DIRTY OIL UNIT IS, AT LEAST IN PART, CHARGED TO THE FRACTIONATOR FOR THE CLEAN OIL UNIT TO DILUTE THE CATALYST LOADING OF THE CLEAN OIL UNIT''S SLURRY, WHICH MINIMIZES EROSION OF THE SLURRY PUMPS, INCREASES HEAVY CYCLE OIL PRODUCTION, AND DECREASES GAS AND COKE PRODUCTION.
Inventors
- 👤 Robert C Mason Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:23
CPC Classifications
C; C10; C10G; C10G55/00; C10G55/02; C10G55/06; C10G51/00; C10G51/06
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |