US2874120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil compositions
Assignee: Shell Development Co
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Filing: 1956-08-17
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Granted: 1959-02-17
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Expires: 1976-08-17
Abstract
No abstract record available.
Inventors
- 👤 Forrest J Watson
- 👤 Rupert C Morris
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:47
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2219/00; C10M2219/08; C10M2219/082; C10M2223/00; C10M2223/06; C10M2223/063; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A LUBRICATING OIL COMPOSITION A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.01% TO ABOUT 10% BY WEIGHT OF AN OIL-SOLUBLE ALIPHATIC AMINE SALT OF A MONOCHLORALKYPHOSPHONIC ACID CONTAINING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL GROUP AND WHEREIN THE CHLORINE ATOM IS ON THE ALPHA CARBON TO THE PHOSPHOROUS ATOM, THE AMINE PORTION OF THE SALT BEING A BRANCHED-CHAIN-ALIPHATIC AMINE HAVING FROM 8 TO 24 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINES.
Claim 2
Dependent Claim
84 words
A LUBRICATING OIL COMPOSITION A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.01% TO ABOUT 10% BY WEIGHT OF AN OIL-SOLUBLE ALIPHATIC AMINE SALT OF A MONOCHLORALKYPHOSPHONIC ACID CONTAINING FROM 1 TO 4 CARBON ATOMS IN THE ALKYL GROUP AND WHEREIN THE CHLORINE ATOM IS ON THE ALPHA CARBON TO THE PHOSPHOROUS ATOM, THE AMINE PORTION OF THE SALT BEING A BRANCHED-CHAIN-ALIPHATIC AMINE HAVING FROM 8 TO 24 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINES.
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |