US3159564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integral hydrofining-hydro-cracking process
Assignee: Union Oil Company of California
•
Filing: 1961-10-20
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Granted: 1964-12-01
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Expires: 1981-10-20
Abstract
No abstract record available.
Inventors
- 👤 Arnold E Kelley
- 👤 Raoul P Vaell
- 👤 Texas V Inwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:52
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G47/00; C10G65/00; C10G65/02; C10G65/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A HYDROCRACKING PROCESS WHEREIN A WIDE-BOILINGRANGE HYDROCARBON FEEDSTOCK IS SUBJECTED TO CATALYTIC HYDROCRACKING IN A HYDROCRACKING ZONE IN WHICH RELATIVELY HIGH TEMPERATURES PREVAIL IN A DOWNSTREAM SECTION AND RELATIVELY LOW TEMPERATURES PREVAIL IN AN UPSTREAM SECTION, THE IMPROVEMENT WHICH COMPRISES DIVIDING SAID FEEDSTOCK INTO A RELATIVELY LOW-BOILING FRACTION AND A RELATIVELY HIGHBOILING FRACTION, PASSING SAID HIGH-BOILING FRACTION PLUS HYDROGEN SERIALLY THROUGH SAID LOW-TEMPERATURE SECTION THEN THROUGH SAID HIGH-TEMPERATURE SECTION, AND PASSING SAID LOW-BOILING FRACTION ONLY THROUGH SAID HIGH-TEMPERATURE SECTION IN ADMIXTURE WITH EFFLUENT FROM SAID LOW-TEMPERATURE SECTION.
Claim 2
Dependent Claim
88 words
IN A HYDROCRACKING PROCESS WHEREIN A WIDE-BOILINGRANGE HYDROCARBON FEEDSTOCK IS SUBJECTED TO CATALYTIC HYDROCRACKING IN A HYDROCRACKING ZONE IN WHICH RELATIVELY HIGH TEMPERATURES PREVAIL IN A DOWNSTREAM SECTION AND RELATIVELY LOW TEMPERATURES PREVAIL IN AN UPSTREAM SECTION, THE IMPROVEMENT WHICH COMPRISES DIVIDING SAID FEEDSTOCK INTO A RELATIVELY LOW-BOILING FRACTION AND A RELATIVELY HIGHBOILING FRACTION, PASSING SAID HIGH-BOILING FRACTION PLUS HYDROGEN SERIALLY THROUGH SAID LOW-TEMPERATURE SECTION THEN THROUGH SAID HIGH-TEMPERATURE SECTION, AND PASSING SAID LOW-BOILING FRACTION ONLY THROUGH SAID HIGH-TEMPERATURE SECTION IN ADMIXTURE WITH EFFLUENT FROM SAID LOW-TEMPERATURE SECTION.
References Cited (Backward Citations)
US2952626A
Cited
US2911352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |