US3219666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of succinic acids and nitrogen compounds
Assignee: —
•
Filing: 1961-07-21
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Granted: 1965-11-23
•
Expires: 1981-07-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/408; C07D207/412; C07C; C07C255/00; C07C51/00; C07C51/54; C07C51/567; C07D295/00; C07D295/04; C07G; C07G99/00; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C08F8/30; C08F8/32; C08F8/46; C08G; C08G69/00; C08G69/02; C08G69/26; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10L1/234; C10L1/238; C10L1/2383; C10M; C10M133/00; C10M133/52; C10M133/56; C10M2201/00; C10M2201/02; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/10; C10M2215/102; C10M2215/12; C10M2215/14; C10M2215/16; C10M2215/18; 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; C10M2217/022; C10M2217/024; C10M2217/026; 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; C10M2219/064; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/085; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/09; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/02; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/06; C10N2040/08; C10N2040/20; C10N2040/22; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
AN OIL-SOLUBLE ACYLATED NITROGEN COMPOSITION PREPARED BY THE PROCESS COMPRISING REACTING AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 80*C. TO ABOUT 250*C. A POLYISOBUTENE-SUBSTITUTED SUCCINIC ANHYDRIDE, THE POLYISOBUTENE SUBSTITUENT HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 700 TO 5000, WITH FROM ABOUT ONE-HALF EQUIVALENT TO ABOUT TWO MOLES, PER EQUIVALENT OF SAID SUCCINIC ANHYDRIDE, OF HYDROXYETHYL PEPERAZINE.
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |