Patent US3784474A successfully refreshed from Google Patents.
US3784474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Chevron USA Inc
•
Filing: 1972-03-13
•
Granted: 1974-01-08
•
Expires: 1992-03-13
Abstract
Abstract A LUBRICATING OIL COMPOSITION CONTAINING A HYDROCARBYL SUBSTITUTED AMINE ASHLESS DETERGENT WHERE THE HYDROCARBYL SUBSTITUENT CONTAINS AT LEAST 40 CARBON ATOMS, A POLYOXYALKYLENE DERIVATIVE, AND AN ALKALINE EARTH METAL CARBONATE DISPERSED IN THE OIL TO PROVIDE AN ALKALINITY VALUE OF ABOUT 10 MG. KOH/G. THESE COMPOSITIONS ARE FOUND TO BE HIGHLY RUST AND CORROSION INHIBITORY WHILE ALSO POSSESSING THE ABILITY TO REDUCE OR PREVENT THE FORMATION OF VARNISH, SLUGE AND DEPOSITS ON THE INNER METALLIC SURFACES OF INTERNAL COMBUSTION ENGINES. THE PREFERRED POLYOXYALKYLENE DERIVATIVES ARE THE POLYXYALKYENE POLYOLS OR OXAALKANOLS.
Inventors
- 👤 S Houston
- 👤 W Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:28
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/06; C10M2201/062; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |