US2885361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Standard Oil Co
•
Filing: 1955-10-31
•
Granted: 1959-05-05
•
Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2215/10; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL BASE AND BETWEEN ABOUT 0.001 AND 20% OF AN ADDITIVE PREPARATION BY NEUTRALIZING A MIXTURE OF AND OIL-INSOLUBLE AMINO CARBOXYLIC ACID AND A PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT WITH AT LEAST ONE BASIC REAGENT SELECTED FROM THE GROUP CONSISTING OF BASIC ALKALI AND ALKALINE EARTH METAL COMPOUNDS, SAID MIXTURE CONTAINING BETWEEN 0.5 AND 20 PARTS OF THE AMINO CARBOXYLIC ACID PER 100 PARTS BY WEIGHT OF THE PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT.
Claim 2
Dependent Claim
82 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL BASE AND BETWEEN ABOUT 0.001 AND 20% OF AN ADDITIVE PREPARATION BY NEUTRALIZING A MIXTURE OF AND OIL-INSOLUBLE AMINO CARBOXYLIC ACID AND A PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT WITH AT LEAST ONE BASIC REAGENT SELECTED FROM THE GROUP CONSISTING OF BASIC ALKALI AND ALKALINE EARTH METAL COMPOUNDS, SAID MIXTURE CONTAINING BETWEEN 0.5 AND 20 PARTS OF THE AMINO CARBOXYLIC ACID PER 100 PARTS BY WEIGHT OF THE PHOSPHORUS SULFIDE-HYDROCARBON REACTION PRODUCT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |