US3697426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amines as antiwear additives in marine cylinder oils
Assignee: Chevron USA Inc
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Filing: 1971-04-15
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Granted: 1972-10-10
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Expires: 1991-04-15
Abstract
Abstract COMBINATIONS OF OVERBASED CALCIUM PHENATES AND RELATIVELY HIGH MOLECULAR WEIGHT ALIPHATIC HYDROCARBON SUBSTITUTED ALKYLENE POLYAMINES ARE USED IN LUBRICATING OILS, PARTICULARLY MARINE LUBRICATING OILS, TO REDUCE WEAR AND PROVIDE ACID NEUTRALIZATION CAPACITY.
Inventors
- 👤 Warren Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:00
CPC Classifications
C; C10; C10M; C10M163/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |