Patent US3576743A successfully refreshed from Google Patents.
US3576743A
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Lubricant and fuel additives and process for making the additives
Assignee: Lubrizol Corp
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Filing: 1969-04-11
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Granted: 1971-04-27
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Expires: 1989-04-11
Abstract
Abstract OIL-SOLUBLE COMPOSITION PRODUCED BY REACTING AT LEAST ONE HIGH MOLECULAR WEIGHT POLYCRBOXYLIC ACID ACYLATING AGENT WITH AT LEAST ONE EQUIVALENT OF A POLYHYDRIC ALCOHOL TO FORM A FIRST REACTION MIXTURE WHICH IS THEN CONTACTED WITH A HYDROXY-SUBSTITUTED PRIMARY AMINE. THE RESULTING PRODUCTS ARE USEFUL PRIMARILY AS LUBRICANT AND FUEL ADDITIVES. AN OIL-SOLUBLE COMPOSITION PREPARED BY REACTING POLYISOBUTENYL-SUCCINIC ANHYDRIDE WITH A POLYHYDRIC LOWER ALKANOL TO FORM A FIRST REACTION MIXTURE WHICH IS THEN CONTACTED WITH TRSIMETHYLOLAMINOMETHAN E IS REPRESENTATIVE.
Inventors
- 👤 Robert Widmer
- 👤 Norman A Meinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:40
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/18; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10M; C10M133/00; C10M133/52; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/084; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/20; C10N2040/25; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/26; C10N2050/00; C10N2050/10
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |