US2998386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing a fatty acid amide of phenothiazine
Assignee: Sinclair Refining Co
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Filing: 1959-01-26
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Granted: 1961-08-29
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Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:45
CPC Classifications
C; C10; C10M; C10M5/00; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/304; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A LUBRICANT BASE SELECTED FROM THE GROUP CONSISTING OF MINERAL OIL LUBRICANTS AND SYNTHETIC ESTER OIL BASED METAL SOAP THICKENED GREASES, AND AN OIL-COMPATIBLE FATTY ACID AMIDE OF PHENOTHIAZINE, WHEREIN THE FATTY ACID RADICAL CONTAINS 10 TO 32 CARBON ATOMS, IN AN AMOUNT SUFFICIENT TO GIVE IMPROVED OXIDATION STABILITY IN THE TEMPERATURE RANGE OF ABOUT 300 TO 450*F.
Claim 2
Dependent Claim
64 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A LUBRICANT BASE SELECTED FROM THE GROUP CONSISTING OF MINERAL OIL LUBRICANTS AND SYNTHETIC ESTER OIL BASED METAL SOAP THICKENED GREASES, AND AN OIL-COMPATIBLE FATTY ACID AMIDE OF PHENOTHIAZINE, WHEREIN THE FATTY ACID RADICAL CONTAINS 10 TO 32 CARBON ATOMS, IN AN AMOUNT SUFFICIENT TO GIVE IMPROVED OXIDATION STABILITY IN THE TEMPERATURE RANGE OF ABOUT 300 TO 450*F.
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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |