US2828260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Table iv
Assignee: —
•
Filing: —
•
Granted: 1958-03-25
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Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:20
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/044; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/043; C10M2201/10; C10M2201/105; C10M2203/00; C10M2203/10; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2215/00; C10M2215/22; C10M2215/223; C10M2215/224; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2040/10; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A THICKENED LUBRICANT OF HIGH TEMPERATURE STABILITY AND GOOD DYNAMIC WATER RESISTANCE, CONSISTING ESSENTIALLY OF A MINERAL LUBRICATING OIL OF LUBRICATING VISCOSITY AS THE MAJOR COMPONENT, A FINELY-DIVIDED INORGANIC WATERSUSCEPTIBLE OIL THICKNER IN AN AMOUNT SUFFICIENT TO IMPART A GREASE CONSISTENCY OF THR OIL, A WATER-INSOLUBLE OILMISCIBLE POLYALKYLENE GLYCOL DIETHER HAVING A VISCOSITY AT 100*F., WITHIN THE RANGE OF FROM 40 TO 500 SSU, AND A WATER-INSOLUBLE OIL-DISPERSIBLE CATIONIC SURFACE-ACTIVE IMIDAZOLINE HAVING AN ALIPHATIC GROUP SUBSTITUTED AT THE 2-POSITION AND A HYDROPHILIC GROUP SUBSTITUTED AT THE 1POSITION IN THE IMIDAZOLINE, SAID GLYCOL DIETHER BEING IN AN AMOUNT WITHIN THE RANGE FROM 0.25 TO ABOUT 2.5% BY WEIGHT OF THE THICKNED LUBRICANT, AND SAID IMIDIAZOLINE BEING IN AN AMOUNT WITHIN THE RANGE FROM 4 TO 14% BY WEIGHT OF THE INORGANIC WATER-SUSCEPTABLE OIL THICKENER EACH BEING IN AMOUNTS SUFFICIENT IN COMBINATION IN IMPART HIGH TEMPERATURE STABILITY AND DYNAMIC WATER RESISTANCE TO THE THICKENED LUBRICANT.
Claim 2
Dependent Claim
153 words
A THICKENED LUBRICANT OF HIGH TEMPERATURE STABILITY AND GOOD DYNAMIC WATER RESISTANCE, CONSISTING ESSENTIALLY OF A MINERAL LUBRICATING OIL OF LUBRICATING VISCOSITY AS THE MAJOR COMPONENT, A FINELY-DIVIDED INORGANIC WATERSUSCEPTIBLE OIL THICKNER IN AN AMOUNT SUFFICIENT TO IMPART A GREASE CONSISTENCY OF THR OIL, A WATER-INSOLUBLE OILMISCIBLE POLYALKYLENE GLYCOL DIETHER HAVING A VISCOSITY AT 100*F., WITHIN THE RANGE OF FROM 40 TO 500 SSU, AND A WATER-INSOLUBLE OIL-DISPERSIBLE CATIONIC SURFACE-ACTIVE IMIDAZOLINE HAVING AN ALIPHATIC GROUP SUBSTITUTED AT THE 2-POSITION AND A HYDROPHILIC GROUP SUBSTITUTED AT THE 1POSITION IN THE IMIDAZOLINE, SAID GLYCOL DIETHER BEING IN AN AMOUNT WITHIN THE RANGE FROM 0.25 TO ABOUT 2.5% BY WEIGHT OF THE THICKNED LUBRICANT, AND SAID IMIDIAZOLINE BEING IN AN AMOUNT WITHIN THE RANGE FROM 4 TO 14% BY WEIGHT OF THE INORGANIC WATER-SUSCEPTABLE OIL THICKENER EACH BEING IN AMOUNTS SUFFICIENT IN COMBINATION IN IMPART HIGH TEMPERATURE STABILITY AND DYNAMIC WATER RESISTANCE TO THE THICKENED LUBRICANT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |