Patent US2959552A successfully refreshed from Google Patents.
US2959552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy pressure lubricants
Assignee: Renault SA
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Filing: 1955-02-16
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Granted: 1960-11-08
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Expires: 1975-02-16
Abstract
No abstract record available.
Inventors
- 👤 Peras Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:18
CPC Classifications
C; C10; C10M; C10M131/00; C10M131/08; C10M131/12; C10M2203/00; C10M2203/10; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A LUBRICATING COMPOSITION EFFECTIVE TO PROVIDE BETWEEN SURFACE IN FRICTIONAL CONTACT A FILM WHICH WILL LUBRICATE SAID SURFACES AT ALL PRESSURES, COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING INCORPORATED THEREIN 0.2 TO 2% OF A MEMBER OF THE GROUP CONSISTING OF THE METHYL AND ETHYL ESTERS OF PALMITIC ACID AND THE METHYL AND ETHYL ESTERS OF STEARIC ACID AND 0.1 TO 2% OF THE METHYL ESTER OF TETRACHLOROLAURIC ACID IN WHICH 3 CHLORINE ATOMS ARE ATTACHED TO THE TERMINAL CARBON ATOM OPPOSITE THE CARBOXYL GROUP AND THE OTHER CHLORINE ATOM IS ATTACHED TO THE CARBON ATOM SECOND FROM SAID TERMINAL CARBON ATOM.
Claim 2
Dependent Claim
104 words
A LUBRICATING COMPOSITION EFFECTIVE TO PROVIDE BETWEEN SURFACE IN FRICTIONAL CONTACT A FILM WHICH WILL LUBRICATE SAID SURFACES AT ALL PRESSURES, COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING INCORPORATED THEREIN 0.2 TO 2% OF A MEMBER OF THE GROUP CONSISTING OF THE METHYL AND ETHYL ESTERS OF PALMITIC ACID AND THE METHYL AND ETHYL ESTERS OF STEARIC ACID AND 0.1 TO 2% OF THE METHYL ESTER OF TETRACHLOROLAURIC ACID IN WHICH 3 CHLORINE ATOMS ARE ATTACHED TO THE TERMINAL CARBON ATOM OPPOSITE THE CARBOXYL GROUP AND THE OTHER CHLORINE ATOM IS ATTACHED TO THE CARBON ATOM SECOND FROM SAID TERMINAL CARBON ATOM.
Claim 3
Dependent Claim
83 words
AN EXTREME PRESSURE LUBRICATING COMPOSITION EFFECTIVE TO PROVIDE BETWEEN SURFACES IN FRICTIONAL CONTACT A FILM WHICH WILL RESIST SEIZING AT HIGH PRESSURES COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING INCORPORATED THEREIN 1 TO 8% OF THE METHYL ESTER OF TETRACHLOROLAURIC ACID IN WHICH 3 CHLORINE ATOMS ARE ATTACHED TO THE TERMINAL CARBON ATOM OPPOSITE AND CARBOXYL GROUP AND THE OTHER CHLORINE ATOM IS ATTACHED TO THE CARBON ATOM SECOND FROM SAID TERMINAL CARBON ATOM, AND 0.2 TO 2% OF ETHYL STEARATE.
Claim 4
Dependent Claim
83 words
AN EXTREME PRESSURE LUBRICATING COMPOSITION EFFECTIVE TO PROVIDE BETWEEN SURFACES IN FRICTIONAL CONTACT A FILM WHICH WILL RESIST SEIZING AT HIGH PRESSURES COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL HAVING INCORPORATED THEREIN 1 TO 8% OF THE METHYL ESTER OF TETRACHLOROLAURIC ACID IN WHICH 3 CHLORINE ATOMS ARE ATTACHED TO THE TERMINAL CARBON ATOM OPPOSITE AND CARBOXYL GROUP AND THE OTHER CHLORINE ATOM IS ATTACHED TO THE CARBON ATOM SECOND FROM SAID TERMINAL CARBON ATOM, AND 0.2 TO 2% OF ETHYL STEARATE.
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |