US3256178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking process
Assignee: Union Oil Company of California
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Filing: 1965-05-25
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Granted: 1966-06-14
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hass
- 👤 Cloyd P Reeg
- 👤 Frank C Riddick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:41
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR CONVERTING A HYDROCARBON FEEDSTOCK CONTAINING MORE THAN 100 PARTS PER MILLION OF ORGANIC NITROGEN AND BOILING ABOVE THE GASOLINE RANGE TO LOWER BOILING HYDROCARBONS, WHICH COMPRISES SUBJECTING SAID FEEDSTOCK TO A LIMITED CATALYTIC HYDROFINING TO CONVERT AT LEAST ABOUT 99% BUT NOT MORE THAN 99.5% OF THE ORGANIC NITROGEN IN SAID FEEDSTOCK TO AMMONIA, THEN PASSING THE PARTIALLY HYDROFINED LIQUID EFFLUENT DOWNWARDLY THROUGH A BED OF GRANULAR HYDROCRACKING CATALYST AT HYDROCRACKING TEMPERATURES BELOW ABOUT 800*F. AND PRESSURES BETWEEN ABOUT 500 AND 2,500 P.S.I.G., WHILE FLOWING A STREAM OF INITIALLY AMMONIA-FREE HYDROGEN UPWARDLY THROUGH SAID CATALYST BED IN COUNTERCURRENT CONTACT WITH SAID DOWNFLOWING LIQUID HYDRO FINER EFFLUENT, RECOVERING A VAPOR PHASE MIXTURE OF HYDROGEN AND LOW-BOILING LIQUID
Claim 2
Dependent Claim
119 words
A PROCESS FOR CONVERTING A HYDROCARBON FEEDSTOCK CONTAINING MORE THAN 100 PARTS PER MILLION OF ORGANIC NITROGEN AND BOILING ABOVE THE GASOLINE RANGE TO LOWER BOILING HYDROCARBONS, WHICH COMPRISES SUBJECTING SAID FEEDSTOCK TO A LIMITED CATALYTIC HYDROFINING TO CONVERT AT LEAST ABOUT 99% BUT NOT MORE THAN 99.5% OF THE ORGANIC NITROGEN IN SAID FEEDSTOCK TO AMMONIA, THEN PASSING THE PARTIALLY HYDROFINED LIQUID EFFLUENT DOWNWARDLY THROUGH A BED OF GRANULAR HYDROCRACKING CATALYST AT HYDROCRACKING TEMPERATURES BELOW ABOUT 800*F. AND PRESSURES BETWEEN ABOUT 500 AND 2,500 P.S.I.G., WHILE FLOWING A STREAM OF INITIALLY AMMONIA-FREE HYDROGEN UPWARDLY THROUGH SAID CATALYST BED IN COUNTERCURRENT CONTACT WITH SAID DOWNFLOWING LIQUID HYDRO FINER EFFLUENT, RECOVERING A VAPOR PHASE MIXTURE OF HYDROGEN AND LOW-BOILING LIQUID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |