US2951022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing lubricating oils using radiation
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-01-24
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Granted: 1960-08-30
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Harry M Hartzband
- 👤 Barry L Tarmy
- 👤 Robert B Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:39
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS COMPRISING IRRADIATING A PREDOMINANTLY PARAFFINIC FEED STOCK BOILING IN THE RANGE OF 100 TO 700*F. AND HAVING A VISCOSITY BELOW 35 SSU AT 210*F. WITH HIGH ENERGY IONIZING RADIATION HAVING AN ENERGY LEVEL ABOVE 30 ELECTRON VOLTS, AT A RATE IN THE RANGE OF 1 TO 50X10-3 KW. H./LB./HR. AND AT A TEMPERATURE UP TO 700*F., UNTIL AT LEAST 5X10-3KW.H./LB. OF RADIATED AND REABSORBED, SEPARATING THE MATERIAL SO IRRADIATED AND RECOVERING AN INTERMEDIATE BOILING RANGE DISTILLATE FRACTION HAVING A VISCOSITY ABOVE 35 SSU AT 210*F. AND A V.I ABOVE 120, AND RECYCLING A PORTION OF THE IRRADIATED MATERIAL BOILING BELOW SAID INTERMEDIATE FRACTION.
Claim 2
Dependent Claim
105 words
A PROCESS COMPRISING IRRADIATING A PREDOMINANTLY PARAFFINIC FEED STOCK BOILING IN THE RANGE OF 100 TO 700*F. AND HAVING A VISCOSITY BELOW 35 SSU AT 210*F. WITH HIGH ENERGY IONIZING RADIATION HAVING AN ENERGY LEVEL ABOVE 30 ELECTRON VOLTS, AT A RATE IN THE RANGE OF 1 TO 50X10-3 KW. H./LB./HR. AND AT A TEMPERATURE UP TO 700*F., UNTIL AT LEAST 5X10-3KW.H./LB. OF RADIATED AND REABSORBED, SEPARATING THE MATERIAL SO IRRADIATED AND RECOVERING AN INTERMEDIATE BOILING RANGE DISTILLATE FRACTION HAVING A VISCOSITY ABOVE 35 SSU AT 210*F. AND A V.I ABOVE 120, AND RECYCLING A PORTION OF THE IRRADIATED MATERIAL BOILING BELOW SAID INTERMEDIATE FRACTION.
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |