US2687378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: California Research LLC
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Filing: 1951-12-11
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Granted: 1954-08-24
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Expires: 1971-12-11
Abstract
No abstract record available.
Inventors
- 👤 Goldschmidt Alfred
- 👤 William T Stewart
- 👤 Oliver L Harle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:31
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/04; C10M2207/046; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2215/066; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/086; C10M2219/087; C10M2219/089; C10M2219/10; C10N; C10N2040/00; C10N2040/06; C10N2040/135; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PORTION OF POLYALKLENE GLYCOL POLYMERIC MATERIAL OR LUBRICATING OIL VISCOSITY WHICH IS SUSCEPTIBLE TO OXIDATIVE DETERIORATION, TOGETHER WITH FROM 0.1 TO 5% BY WEIGHT OF A HYDROXY AROMATIC COMPOUND HAVING TWO HYDROXYL GROUPS ON AN AROMATIC NUCLEUS AND FROM 0.5 TO 10% BY WEIGHT OF AN ALIPHATIC AMINE SELECTED FROM THE GROUP CONSISTING OF TETRAETHYLENEPENTAMINE, TRIISOPROPANOLAMINE, POLYETHYLENE DIAMINE, AMINETHYMORPHOLINE, TRETHANOLAMINE, DIPROPYLENETRIAMINE, AMINOETHYLETHANOLAMINE, HYDROXYETHLYDIETHYLENTERIAMINE, N1,5 - DIOLEOYLTETRAETHYLENEPENTAMINE, AND TRIETHANOLAMINE TRISTEARATE, AND HYDROXY AROMATIC COMPOUND AND SAID ALIPHATIC AMINE EACH BEING SOLUBLE IN SAID POLYALKYLENE GLYCOL POLYMERIC MATERIAL TO THE EXTENT OF AT LEAST O.25 BY WEIGHT.
Claim 2
Dependent Claim
101 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PORTION OF POLYALKLENE GLYCOL POLYMERIC MATERIAL OR LUBRICATING OIL VISCOSITY WHICH IS SUSCEPTIBLE TO OXIDATIVE DETERIORATION, TOGETHER WITH FROM 0.1 TO 5% BY WEIGHT OF A HYDROXY AROMATIC COMPOUND HAVING TWO HYDROXYL GROUPS ON AN AROMATIC NUCLEUS AND FROM 0.5 TO 10% BY WEIGHT OF AN ALIPHATIC AMINE SELECTED FROM THE GROUP CONSISTING OF TETRAETHYLENEPENTAMINE, TRIISOPROPANOLAMINE, POLYETHYLENE DIAMINE, AMINETHYMORPHOLINE, TRETHANOLAMINE, DIPROPYLENETRIAMINE, AMINOETHYLETHANOLAMINE, HYDROXYETHLYDIETHYLENTERIAMINE, N1,5 - DIOLEOYLTETRAETHYLENEPENTAMINE, AND TRIETHANOLAMINE TRISTEARATE, AND HYDROXY AROMATIC COMPOUND AND SAID ALIPHATIC AMINE EACH BEING SOLUBLE IN SAID POLYALKYLENE GLYCOL POLYMERIC MATERIAL TO THE EXTENT OF AT LEAST O.25 BY WEIGHT.
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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |