US2809934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent lubricants and lubricating oil additives and process of making the same
Assignee: Standard Oil Co
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Filing: 1953-10-01
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Granted: 1957-10-15
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Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Alford
- 👤 John D Bartleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:51
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/026; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/067; C10M2219/00; C10M2219/02; C10M2219/022; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF PREPARING DETERGENT LUBRICATING OIL ADDITIVES AND LUBRICANTS WHICH COMPRISES REACTING THE PRODUCT OF THE REACTION OF SOLVENT-EXTRACTED LUBRICATING OIL STOCK CONSISTING ESSENTIALLY OF HYDROCARBON MATERIAL WITH AN AMOUNT OF PHOSPHORUS PENTASULFIDE IN THE RANGE OF ABOUT 0.1 TO ABOUT 0.75% BY WEIGHT AT A TEMPERATURE IN THE RANGE OF ABOUT 275* TO 450*F. WITH AN ORGANIC AMINE BASE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINES HAVING UP TO 18 CARBON ATOMS IN AN AMOUNT TO IMPROVE THE DETERGENCYOF THE OIL WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 8 MOLES PER ATOMIC WEIGHT OF PHOSPHORUS IN THE REACTION PRODUCT AT A TEMPERATURE OF AT LEAST 450*F. FOR AT LEAST ONE-HALF HOUR.
Claim 2
Independent Claim
117 words
A METHOD OF PREPARING DETERGENT LUBRICATING OIL ADDITIVES AND LUBRICANTS WHICH COMPRISES REACTING THE PRODUCT OF THE REACTION OF SOLVENT-EXTRACTED LUBRICATING OIL STOCK CONSISTING ESSENTIALLY OF HYDROCARBON MATERIAL WITH AN AMOUNT OF PHOSPHORUS PENTASULFIDE IN THE RANGE OF ABOUT 0.1 TO ABOUT 0.75% BY WEIGHT AT A TEMPERATURE IN THE RANGE OF ABOUT 275* TO 450*F. WITH AN ORGANIC AMINE BASE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINES HAVING UP TO 18 CARBON ATOMS IN AN AMOUNT TO IMPROVE THE DETERGENCYOF THE OIL WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 8 MOLES PER ATOMIC WEIGHT OF PHOSPHORUS IN THE REACTION PRODUCT AT A TEMPERATURE OF AT LEAST 450*F. FOR AT LEAST ONE-HALF HOUR.
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |