Patent US3058956A successfully refreshed from Google Patents.
US3058956A
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Additive improving lubricating compositions and process of preparing them
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-05-07
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Granted: 1962-10-16
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Expires: 1979-05-07
Abstract
No abstract record available.
Inventors
- 👤 Tirtiaux Robert
- 👤 Tourret Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:12
CPC Classifications
C; C10; C10M; C10M151/00; C10M151/02; C08; C08F; C08F222/00; C08F222/10; C08F222/12; C08F222/14; C08F222/145; C10M149/00; C10M149/02; C10M2203/00; C10M2203/10; C10M2217/00; C10M2217/02; C10M2217/022; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/12; C10M2223/121; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A HYDROCARBON-OIL-SOLUBLE ASHLESS POLYMER, SUITABLE FOR IMPROVING THE VISCOSITY INDES, POUT POINT AND DETERGENCY OF LUBRICATING OIL, OF (1) AN ESTER OF C4 UNSATURATED DICARBOXYLIC ACID AND ALCOHOL HAVING ABOUT 8 TO 16 CARBON ATOMS, (2) AN ESTER OF VINYL ALCOHOL AND LOWER SATURATED FATTY ACID AND (3) AN AMINO DIESTER OF THE FORMULA:
Claim 2
Dependent Claim
54 words
A HYDROCARBON-OIL-SOLUBLE ASHLESS POLYMER, SUITABLE FOR IMPROVING THE VISCOSITY INDES, POUT POINT AND DETERGENCY OF LUBRICATING OIL, OF (1) AN ESTER OF C4 UNSATURATED DICARBOXYLIC ACID AND ALCOHOL HAVING ABOUT 8 TO 16 CARBON ATOMS, (2) AN ESTER OF VINYL ALCOHOL AND LOWER SATURATED FATTY ACID AND (3) AN AMINO DIESTER OF THE FORMULA:
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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |