US2531801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Monsanto Chemicals Ltd
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Filing: 1946-06-21
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Granted: 1950-11-28
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Expires: 1966-06-21
Abstract
No abstract record available.
Inventors
- 👤 Edward S Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:04
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/02; C10M129/68; C10M129/78; C10M2207/00; C10M2207/28; C10M2207/283; C10M2207/30; C10M2207/302; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/04; C10M2211/044; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/06; C10M2219/062; C10M2219/08; C10M2219/082; C10M2219/084; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A COMPOUNDED LUBRICATING OIL COMPRISING PREDOMINATELY A MINERAL LUBRICATING OIL SAID OIL HAVING INCORPORATED THEREIN 0.1% TO 10% WITH RESPECT TO THE OIL BASE OF AN OIL SOLUBLE PARTIAL ESTER OF A HIGHER FATTY ACID CONTAINING AT LEAST 6 BUT NOT MORE THAN 22 CARBON ATOMS AND A POLYHYDRIC ALCOHOL FURTHER ESTERIFIED WITH A SATURATED ALIPHATIC HYDROXY POLYCARBOXYLIC ACID HAVING NOT MORE THAN THREE CARBOXYL GROUPS AND AT LEAST ONE HYDROXYL GROUP NOT MORE THAN TWO CARBON ATOMS REMOVED FROM A CARBOXYL GROUP OF SAID ACID.
Claim 2
Dependent Claim
86 words
A COMPOUNDED LUBRICATING OIL COMPRISING PREDOMINATELY A MINERAL LUBRICATING OIL SAID OIL HAVING INCORPORATED THEREIN 0.1% TO 10% WITH RESPECT TO THE OIL BASE OF AN OIL SOLUBLE PARTIAL ESTER OF A HIGHER FATTY ACID CONTAINING AT LEAST 6 BUT NOT MORE THAN 22 CARBON ATOMS AND A POLYHYDRIC ALCOHOL FURTHER ESTERIFIED WITH A SATURATED ALIPHATIC HYDROXY POLYCARBOXYLIC ACID HAVING NOT MORE THAN THREE CARBOXYL GROUPS AND AT LEAST ONE HYDROXYL GROUP NOT MORE THAN TWO CARBON ATOMS REMOVED FROM A CARBOXYL GROUP OF SAID ACID.
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) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |