US2927891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination heat exchange and hydrofining process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-11-16
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Granted: 1960-03-08
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Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 Weikart John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:49
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A COMBINATION HYDROFINING PROCESS WHEREIN A MINOR PROPORTION OF LIGHT PETROLEUM OIL FEED IS CATALYTICALLY HYDORFINED IN A FIRST HYDROFINING ZONE AT A TEMPERATURE IN THE RANGE OF 550*F. TO 700*F. AND A MAJOR PROPORTION OF A HEAVIER PETROLEUM OIL FEED IS CATALYTICALLY HYDORFINED IN A SECOND HYDROFINING ZONE A TEMPERATURES IN THE RANGE OF 650* TO 750*F. THE INPROVED METHOD OF HEATING SAID OILS TO SAID HYDROFINING TEMPERATURES WHICH COMPRISES HEATING THE HEAVIER PETROLEUM OIL FEED TO A TEMPERATURE ABOVE THE TEMPERATURE RANGE MAINTAINED IN SAID SECOND HYDORFINING ZONE, BRINGING THE HEATED HEAVIER PETROLEUM OIL FEED INTO INDIRECT HEAT EXCHANGE WITH SAID LIGHTER PETROLEUM OIL FEED THEREBY HEATING THE LIGHTER OIL TO A TEMPERATURE OF FROM 550* TO 700*F. FOR CHARGING TO SAID FIRST HYDROFINING ZONE AND COOLING THE HEAVIER OIL TO A TEMPERATURE OF FROM 650 TO 750*F. FOR CHARGING TO SAID SECOND HYDROFINING ZONE.
Claim 2
Dependent Claim
148 words
IN A COMBINATION HYDROFINING PROCESS WHEREIN A MINOR PROPORTION OF LIGHT PETROLEUM OIL FEED IS CATALYTICALLY HYDORFINED IN A FIRST HYDROFINING ZONE AT A TEMPERATURE IN THE RANGE OF 550*F. TO 700*F. AND A MAJOR PROPORTION OF A HEAVIER PETROLEUM OIL FEED IS CATALYTICALLY HYDORFINED IN A SECOND HYDROFINING ZONE A TEMPERATURES IN THE RANGE OF 650* TO 750*F. THE INPROVED METHOD OF HEATING SAID OILS TO SAID HYDROFINING TEMPERATURES WHICH COMPRISES HEATING THE HEAVIER PETROLEUM OIL FEED TO A TEMPERATURE ABOVE THE TEMPERATURE RANGE MAINTAINED IN SAID SECOND HYDORFINING ZONE, BRINGING THE HEATED HEAVIER PETROLEUM OIL FEED INTO INDIRECT HEAT EXCHANGE WITH SAID LIGHTER PETROLEUM OIL FEED THEREBY HEATING THE LIGHTER OIL TO A TEMPERATURE OF FROM 550* TO 700*F. FOR CHARGING TO SAID FIRST HYDROFINING ZONE AND COOLING THE HEAVIER OIL TO A TEMPERATURE OF FROM 650 TO 750*F. FOR CHARGING TO SAID SECOND HYDROFINING ZONE.
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) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |