US3137679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil additives
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-09-28
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Granted: 1964-06-16
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Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 Peter J V J Agius
- 👤 Joan D Bryan
- 👤 Thomas A Garbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:07
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10M149/10; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08L; C08L39/00; C08L39/04; C08L39/06; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C10L1/2368; C10M145/00; C10M145/02; C10M145/04; C10M145/10; C10M145/16; C10M2203/00; C10M2203/10; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/08; C10M2209/086; C10M2209/10; C10M2209/103; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN OIL SOLUBLE POLYMER, USEFUL AS A LUBRICATING OIL ADDITIVE FOR INHIBITING SLUDGE FORMATION AND INCREASING VISCOSITY INDEX OF A LUBRICATING OIL, OF (A) 30 TO 50 MOLE PERCENT OF A POLYMERIZABLE UNSATURATED ESTER OF A MONOBASIC SATURATED ALCOHOL CONTAINING 1 TO 20 CARBON ATOMS AND AN ETHYLENTICALLY MONO-UNSATURATED DICARBOXYLIC ACID CONTAINING 2 TO 10 CARBON ATOMS PER MOLECULE, (B) 1 TO 35 MOLE PERCENT OF AN N-VINYL SUBSTITUTED CYCLIC AMINE HAVING THE FORMULA:
Claim 2
Dependent Claim
74 words
AN OIL SOLUBLE POLYMER, USEFUL AS A LUBRICATING OIL ADDITIVE FOR INHIBITING SLUDGE FORMATION AND INCREASING VISCOSITY INDEX OF A LUBRICATING OIL, OF (A) 30 TO 50 MOLE PERCENT OF A POLYMERIZABLE UNSATURATED ESTER OF A MONOBASIC SATURATED ALCOHOL CONTAINING 1 TO 20 CARBON ATOMS AND AN ETHYLENTICALLY MONO-UNSATURATED DICARBOXYLIC ACID CONTAINING 2 TO 10 CARBON ATOMS PER MOLECULE, (B) 1 TO 35 MOLE PERCENT OF AN N-VINYL SUBSTITUTED CYCLIC AMINE HAVING THE FORMULA:
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |