US2845388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of petroleum distillates
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-08-29
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Granted: 1958-07-29
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Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 James F Black
- 👤 Donald A Guthrie
- 👤 George A Weisgerber
- 👤 John J Heigl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:39
CPC Classifications
C; C10; C10G; C10G32/00; C10G32/04; C10G31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF STABILIZING A PETROLEUM MIDDLE DISTILLATE BOILING WITHIN THE RANGE OF ABOUT 300* TO 750*F., WHICH COMPRISES EXPOSING SAID DISTILLATE TO GAMMA RAY RADIATION OBTAINED FROM A RADIO-ISOTOPE WHILE BLOWING SAID DISTILLATE WITH A FREE OXYGEN-CONTAINING GAS, SAID DISTILLATE NOT BEING IN DIRECT CONTACT WITH SAID RADIO-ISOTOPE, THE IRRADIATION BEING CARRIED OUT AT A DOSE RATE IN THE RANGE OF 50,000 TO 20,000,000 ROENTGENS PER HOUR UNTIL IN THE RANGE OF 100,000 TO 100,000,00 ROENTGENS OF RADIANT ENERGY HAVE BEEN ABSORBED AND UNTIL FURTHER IRRADIATION OF SAID DISTILLATE PRODUCES ESSENTIALLY NO ADDITIONAL OIL-INSOLUBLE SEDIMENT, SEPARATING THE RESULTANT OIL-INSOLUBLE SEDIMENT AND HIGH BOILING SOLUBLE GUM FROM THE IRRADIATED MATERIAL BY DISTILLATION, AND RECOVERING A STABILIZED DISTILLATE.
Claim 2
Independent Claim
117 words
A METHOD OF STABILIZING A PETROLEUM MIDDLE DISTILLATE BOILING WITHIN THE RANGE OF ABOUT 300* TO 750*F., WHICH COMPRISES EXPOSING SAID DISTILLATE TO GAMMA RAY RADIATION OBTAINED FROM A RADIO-ISOTOPE WHILE BLOWING SAID DISTILLATE WITH A FREE OXYGEN-CONTAINING GAS, SAID DISTILLATE NOT BEING IN DIRECT CONTACT WITH SAID RADIO-ISOTOPE, THE IRRADIATION BEING CARRIED OUT AT A DOSE RATE IN THE RANGE OF 50,000 TO 20,000,000 ROENTGENS PER HOUR UNTIL IN THE RANGE OF 100,000 TO 100,000,00 ROENTGENS OF RADIANT ENERGY HAVE BEEN ABSORBED AND UNTIL FURTHER IRRADIATION OF SAID DISTILLATE PRODUCES ESSENTIALLY NO ADDITIONAL OIL-INSOLUBLE SEDIMENT, SEPARATING THE RESULTANT OIL-INSOLUBLE SEDIMENT AND HIGH BOILING SOLUBLE GUM FROM THE IRRADIATED MATERIAL BY DISTILLATION, AND RECOVERING A STABILIZED DISTILLATE.
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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |