Patent FR1213598A successfully refreshed from Google Patents.
US2546552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants
Assignee: Standard Oil Co
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Filing: 1947-08-08
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Granted: 1951-03-27
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Expires: 1967-08-08
Abstract
No abstract record available.
Inventors
- 👤 Clarence M Loane
- 👤 Lawson W Mixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:15
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/043; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A NON-AQUEOUS LUBRICANT COMPOSITION COMPRISING MAJOR PROPORTION OF A HYDROCARBON OIL AND IN COMBINATION THEREWITH FROM ABOUT 0.001% TO ABOUT 10% OF A POTASSIUM-CONTAINING NEUTRAL IZED REACTION PRODUCT OF P2S5 AND AN OLEFIN POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO ABOUT 10,000 OBTAINED BY REACTING SAID OLEFIN POLYMER WITH FROM ABOUT 1% TO ABOUT 50% P2S5 AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 500* F. AND NEUTRALIZING THE RESULTANT REACTION PRODUCT WITH A POTASSIUM-CONTAINING BASIC REAGENT, AND FROM ABOUT 0.01% TO ABOUT 10% OF A POTASSIUM SALT OF A PROPYLENE POLYMER ALKYLATED BENZENE SULFONATE, SAID PROPYLENE POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 100 TO ABOUT 5000.
Claim 2
Dependent Claim
114 words
A NON-AQUEOUS LUBRICANT COMPOSITION COMPRISING MAJOR PROPORTION OF A HYDROCARBON OIL AND IN COMBINATION THEREWITH FROM ABOUT 0.001% TO ABOUT 10% OF A POTASSIUM-CONTAINING NEUTRAL IZED REACTION PRODUCT OF P2S5 AND AN OLEFIN POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO ABOUT 10,000 OBTAINED BY REACTING SAID OLEFIN POLYMER WITH FROM ABOUT 1% TO ABOUT 50% P2S5 AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 500* F. AND NEUTRALIZING THE RESULTANT REACTION PRODUCT WITH A POTASSIUM-CONTAINING BASIC REAGENT, AND FROM ABOUT 0.01% TO ABOUT 10% OF A POTASSIUM SALT OF A PROPYLENE POLYMER ALKYLATED BENZENE SULFONATE, SAID PROPYLENE POLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 100 TO ABOUT 5000.
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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) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |