US3634241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonate salts of alkenyl succinimides
Assignee: Chevron USA Inc
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Filing: 1969-10-10
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Granted: 1972-01-11
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Expires: 1989-10-10
Abstract
Abstract A COMPOSITION, USEFUL AS A LUBRICATING OIL ADDITIVE, IS OBTAINED BY FIRST REACTING A C20-C400 ALIPHATIC HYDROCARBON SUCCINIC ACID OR DERIVATIVE THEREOF WHICH IS CAPABLE OF FORMING CARBOXIMIDE BONDS WIHT A C2-C30, N2-N10 AKYLENE POLYAMINE TO FORM A CARBOXIMIDE, AND THE REACTING THE CARBOXIMIDE WITH A C12-C40 HYDROCARBON SULFONIC ACID.
Inventors
- 👤 Warren Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/408; C07D207/412; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/16; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |