Patent US5440681A successfully refreshed from Google Patents.
Patent US3150077A successfully refreshed from Google Patents.
US3150077A
Expired / Lapsed
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Method of treating lubricating oil
Assignee: Texaco Inc
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Filing: 1961-01-25
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Granted: 1964-09-22
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Expires: 1981-01-25
Abstract
No abstract record available.
Inventors
- 👤 Edward L Cole
- 👤 Gordon H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:16
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/34; C; C10; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF PROCESSING A HYDROCARBON LUBRICATING OIL TO ENHANCE THE QUALITY THEREOF WHICH COMPRISES CONTACTING SAID LUBRICATING OIL WITH HYDROGEN AT A HYDROGEN:LUBRICATING OIL RATIO OF AT LEAST ABOUT 1000 CU.FT./BBL. AND AT AN ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF OXIDES, SULFIDES AND MIXTURES THEREOF OF METALS OF GROUP VI AND GROUP VIII OF THE PERIODIC TABLE, PLATINIZED CHARCOAL, AND HALOGENATED ALUMINUMPLATINUM MIXTURE, SAID HYDROGENATION CATALYST HAVING BEEN PREVIOUSLY SUBJECTED TO IONIZING IRRADIATION UNTIL SAID CATALYST RECEIVED AN ABSORBED DOSAGE OF AT LEAST ABOUT 1X10**7 RADS.
Claim 2
Independent Claim
98 words
A METHOD OF PROCESSING A HYDROCARBON LUBRICATING OIL TO ENHANCE THE QUALITY THEREOF WHICH COMPRISES CONTACTING SAID LUBRICATING OIL WITH HYDROGEN AT A HYDROGEN:LUBRICATING OIL RATIO OF AT LEAST ABOUT 1000 CU.FT./BBL. AND AT AN ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF OXIDES, SULFIDES AND MIXTURES THEREOF OF METALS OF GROUP VI AND GROUP VIII OF THE PERIODIC TABLE, PLATINIZED CHARCOAL, AND HALOGENATED ALUMINUMPLATINUM MIXTURE, SAID HYDROGENATION CATALYST HAVING BEEN PREVIOUSLY SUBJECTED TO IONIZING IRRADIATION UNTIL SAID CATALYST RECEIVED AN ABSORBED DOSAGE OF AT LEAST ABOUT 1X10**7 RADS.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |