Patent US2905618A successfully refreshed from Google Patents.
US2905618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid catalytic hydrocracking of high boiling hydrocarbon oils in several stages
Assignee: Gulf Research and Development Co
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Filing: 1952-04-04
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Granted: 1959-09-22
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Expires: 1972-04-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Mckinley
- 👤 Alfred M Henke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:30
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/24; C10G47/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A PROCESS WHEREIN A HIGH-BOILING NORMALLY LIQUID HYDROCARBON IS HYDROCRACKED IN A FIRST REACTION ZONE MAINTAINED UNDER HYDROCRACKING CONDITIONS INCLUDING AN ELEVATED TEMPERATURE, SAID FIRST REACTION ZONE CONATAINING A BED OF DENSE PHASE FLUIDIZED HYDROGENATION CATALYST PARTICLES ABOVE WHICH THERE IS A DILUTE PHASE OF HYDROGENATION ING MAINTAINED BY A HYDROGEN-CONATINING GAS, THE STEPS WHICH COMPRISE SPARAYING INTO SAID DILUTE PHASE OF CATALYST PARTICLES A HIGH-BOILING NORMALLY LIQUID HYDROCARBON FEED WHICH IS PARTIALLY VAPORIZED TO AN EXTENT OF NOT MORE THAN ABOUT 25 VOLUME PERCENT OF SAID FEED UNDER SAID HYDROCARACKING CONDITIONS IN SAID FIRST REACTION ZONE AND THEREBY VAPORIZING SAID VAPORIZABLE PORTION OF SAID FEED, THE SIZE OF SAID SPRAY BEING SUFFICIENTLY LARGE TO PREVENT FREE TRANSPORT OF THE FEED UPWARDLY INSAID REACTION ZONE AND SUF-
Claim 2
Dependent Claim
128 words
IN A PROCESS WHEREIN A HIGH-BOILING NORMALLY LIQUID HYDROCARBON IS HYDROCRACKED IN A FIRST REACTION ZONE MAINTAINED UNDER HYDROCRACKING CONDITIONS INCLUDING AN ELEVATED TEMPERATURE, SAID FIRST REACTION ZONE CONATAINING A BED OF DENSE PHASE FLUIDIZED HYDROGENATION CATALYST PARTICLES ABOVE WHICH THERE IS A DILUTE PHASE OF HYDROGENATION ING MAINTAINED BY A HYDROGEN-CONATINING GAS, THE STEPS WHICH COMPRISE SPARAYING INTO SAID DILUTE PHASE OF CATALYST PARTICLES A HIGH-BOILING NORMALLY LIQUID HYDROCARBON FEED WHICH IS PARTIALLY VAPORIZED TO AN EXTENT OF NOT MORE THAN ABOUT 25 VOLUME PERCENT OF SAID FEED UNDER SAID HYDROCARACKING CONDITIONS IN SAID FIRST REACTION ZONE AND THEREBY VAPORIZING SAID VAPORIZABLE PORTION OF SAID FEED, THE SIZE OF SAID SPRAY BEING SUFFICIENTLY LARGE TO PREVENT FREE TRANSPORT OF THE FEED UPWARDLY INSAID REACTION ZONE AND SUF-
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |