US2721177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-oxyalkylene glycol lubricant composition
Assignee: California Research LLC
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Filing: 1953-03-30
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Granted: 1955-10-18
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Expires: 1973-03-30
Abstract
No abstract record available.
Inventors
- 👤 Oliver L Harle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:19
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; C10M2209/107; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/068; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2221/00; C10M2221/04; C10M2221/043; 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
81 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PORTION OF AN ALIPHATIC, MONOHYDRIC ALCOHOL-INITIATED POLY1,2-OXYALKYLENE GLYCOL OF LUBRICATING VISCOSITY IN WHICH THE ALKYLENE GROUPS ARE SELECTED FROM THE CLASS CONSISTING OF ETHYLENE AND 1,2 PROPYLENE GROUPS, TOGETHER WITH FROM ABOUT 0.1 TO 5% BY WEIGHT OF A PRIMARY INHIBITOR SELECTED FROM THE CLASS CONSISTING OF PHENYL-A-NAPHTHYLAMINE AND TERT-BUTYLCATECHOL AND AN AMOUNT, SUFFICIENT TO PROVIDE THE LUBRICANT COMPOSITION WITH FROM ABOUT 0.25 TO 2% BY WEIGHT SULFUR, OF A SECONDARY INHIBITOR HAVING THE FORMULA:
Claim 2
Dependent Claim
81 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PORTION OF AN ALIPHATIC, MONOHYDRIC ALCOHOL-INITIATED POLY1,2-OXYALKYLENE GLYCOL OF LUBRICATING VISCOSITY IN WHICH THE ALKYLENE GROUPS ARE SELECTED FROM THE CLASS CONSISTING OF ETHYLENE AND 1,2 PROPYLENE GROUPS, TOGETHER WITH FROM ABOUT 0.1 TO 5% BY WEIGHT OF A PRIMARY INHIBITOR SELECTED FROM THE CLASS CONSISTING OF PHENYL-A-NAPHTHYLAMINE AND TERT-BUTYLCATECHOL AND AN AMOUNT, SUFFICIENT TO PROVIDE THE LUBRICANT COMPOSITION WITH FROM ABOUT 0.25 TO 2% BY WEIGHT SULFUR, OF A SECONDARY INHIBITOR HAVING THE FORMULA:
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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |