Patent US2628932A successfully refreshed from Google Patents.
US2628932A
Expired / Lapsed
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Pyrolytic conversion of hydrocarbons with the aid of a fluid catalyst
Assignee: Sinclair Refining Co
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Filing: 1951-03-15
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Granted: 1953-02-17
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Expires: 1971-03-15
Abstract
No abstract record available.
Inventors
- 👤 Herman I Ringgenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:29
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
IN FLUID CATALYST OPERATIONS FOR THE CONVERSION OF HYDROCARBONS OF THE TYPE WHEREIN FINELY DIVIDED CATALYST IS CONTINUOUSLY CIRCULATED BETWEEN A REGENERATION CHAMBER AND A SEPARATE REACTION CHAMBER, CATALYST WITHDRAWN FROM THE REGENERATOR IS SUSPENDED IN HYDROCARBON VAPORS TO BE CONVERTED, THE SUSPENSION IS INTRODUCED TO THE LOWER PORTION OF THE REACTION CHAMBER, SPENT CATALYST IS SEPARATED FROM VAPORS THE SPENT CATALYST IS STRIPPED OF READILY VAPORIZABLE HYDROCARBONS BY CONTACT WITH A GASEOUS STRIPPING MEDIUM AND IS WITHDRAWN FROM THE BOTTOM OF THE REACTION CHAMBER FOR RECIRCULATION TO THE REGENERATION CHAMBER, THE STEPS OF PASSING THE SUSPENSION OF CATALYST AND HYDROCARBON VAPORS VERTICALLY UPWARD AT HYDROCARBON VAPOR VELOCITY OF ABOUT 15 TO 35 FEET PER SECOND A CONDUIT WHICH PROVIDES A STRAIGHT PATH 5 TO 10
References Cited (Backward Citations)
US2562225A
Cited
US2391944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |