US3700598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel and lubricating oil compositions
Assignee: Ethyl Corp
•
Filing: 1970-11-16
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Granted: 1972-10-24
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Expires: 1990-11-16
Abstract
Abstract THE DISPERSANT AND DETERGENT PROPERTIES OF LUBRICATING OILS AND LIQUID HYDROCARBON FUELS SUCH AS GASOLINE ARE IMPROVED BY ADDITION OF A SMALL BUT EFFECTIVE AMOUNT OF AN N-HYDROCARBLY-SUBSTITUED NITRILOTRIS ETHYLAMINE. THE HYDROCARBYL GROUP IS PREFERABLY A POLYOLEFIN GROUP, SUCH AS A POLYBUTENE GROUP, HAVING A MOLECULAR WEIGHT OF FROM ABOUT 300 TO 20,000, MORE PREFERABLY FROM 500 TO 2,000.
Inventors
- 👤 Larry Plonsker
- 👤 Warren L Perilstein
- 👤 Robert E Malec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:11
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/54; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/16; C10L1/1616; C10L1/1625; C10L1/1633; C10L1/1641; C10L1/22; C10L1/234; C10L1/238; C10L1/2383; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/028; C10M2205/04; C10M2205/14; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2223/06; C10M2223/065; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |