US3702300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing nitrogen-containing ester
Assignee: Lubrizol Corp
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Filing: 1971-03-17
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Granted: 1972-11-07
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Expires: 1991-03-17
Abstract
Abstract A CARBOXY-CONTAINING INTERPOLYMER IN WHICH SOME OF THE CARBOXY RADICALS ARE ESTERIFIED AND THE REMAINING CARBOXY RADICALS ARE NEUTRALIZED BY REACTION WITH A POLYAMINO COMPOUND HAVING ONE PRIMARY OR SECONDARY AMINO GROUP IS USEFUL AS AN ADDITIVE IN LUBRICATING COMPOSITIONS AND FUELS. THE INTERPOLYMER IS ESPECIALLY EFFECTIVE TO IMPART DESIRABLE VISCOSITY CHARACTERISTICS AND ANTI-SLUDGE PROPERTIES TO A LUBRICATING OIL.
Inventors
- 👤 Lester E Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:51
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1966; C08; C08F; C08F8/00; C08F8/30; C10L1/22; C10L1/234; C10L1/236; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/16; C10M149/00; C10M149/02; C10M149/06; C10M149/10; C10M151/00; C10M151/02; C08F2800/00; C08F2800/20; C10M2201/00; C10M2201/06; C10M2201/062; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2203/102; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2205/17; C10M2205/173; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/222; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/049; C10M2223/06; C10M2223/061; C10M2223/065; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10M2227/04; C10M2227/06; C10M2227/061; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/14; C10N2040/00; C10N2040/02; C10N2040/06; C10N2040/20; C10N2040/25; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/26
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |