US3573205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diisocyanate modified polyisobutenyl-succinimides as lubricating oil detergents
Assignee: Chevron USA Inc
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Filing: 1968-12-17
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Granted: 1971-03-30
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Expires: 1988-12-17
Abstract
Abstract THE REACTION PRODUCT OF MONO- AND BIS-SUCCINIMIDES OF ALKYLENE POLYAMINES AND DIISOCYANATES ARE USED AS DETERGENTS IN LUBRICATING OILS.
Inventors
- 👤 Warren Lowe
- 👤 Yngve G Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:08
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C08; C08F; C08F8/00; C08F8/30; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6415; C10M2203/00; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/04; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2227/00; C10M2227/02; C10N; C10N2010/00; C10N2010/04; C10N2070/00; C10N2070/02
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |