Patent US2858272A successfully refreshed from Google Patents.
US2858272A
Expired / Lapsed
US
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Metal salts of sulfonated acrylic ester polymers and lubricating oils containing thesame
Assignee: Union Oil Company of California
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Filing: 1955-09-26
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Granted: 1958-10-28
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 James F Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:22
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/44; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2209/00; C10M2209/10; C10M2209/101; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
33 words
A LUBRICATING OIL COMPRISING MINERAL LUBRICATING OIL IN MAJOR AMOUNT CONTAINING BETWEEN ABOUT 0.2% AND ABOUT 7% BY WEIGHT OF A METAL SALT OF A SULFONATED POLYMERIZED ESTER, SAID ESTER HAVING THE FORMULA
Claim 2
Dependent Claim
33 words
A LUBRICATING OIL COMPRISING MINERAL LUBRICATING OIL IN MAJOR AMOUNT CONTAINING BETWEEN ABOUT 0.2% AND ABOUT 7% BY WEIGHT OF A METAL SALT OF A SULFONATED POLYMERIZED ESTER, SAID ESTER HAVING THE FORMULA
Claim 3
Dependent Claim
61 words
A COMPOSITION ADAPTED FOR ADDITION TO MINERAL LUBRICATING OIL COMPRISING A COMPLEX SULFONATE CONSISTING OF BETWEEN ABOUT 0.2 AND 2 EQUIVALENTS OF A BASICALLY REACTING METAL INORGANIC COMPOUND OF THE CLASS CONSISTING OF METAL OXIDES, HYDROXIDES, CARBONATES AND BICARBONATES AND 1 EQUIVALENT OF METAL SULFONATED POLYMERIZED ESTER, SAID ESTER METAL SALT OF A SULFONATED POLYMERIZED ESTER, SAID ESTER HAVING THE FORMULA
Claim 4
Dependent Claim
61 words
A COMPOSITION ADAPTED FOR ADDITION TO MINERAL LUBRICATING OIL COMPRISING A COMPLEX SULFONATE CONSISTING OF BETWEEN ABOUT 0.2 AND 2 EQUIVALENTS OF A BASICALLY REACTING METAL INORGANIC COMPOUND OF THE CLASS CONSISTING OF METAL OXIDES, HYDROXIDES, CARBONATES AND BICARBONATES AND 1 EQUIVALENT OF METAL SULFONATED POLYMERIZED ESTER, SAID ESTER METAL SALT OF A SULFONATED POLYMERIZED ESTER, SAID ESTER HAVING THE FORMULA
References Cited (Backward Citations)
US2638445A
Cited
US2625529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |