US2760937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus-containing lubricant additives
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1951-10-31
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Granted: 1956-08-28
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Expires: 1971-10-31
Abstract
No abstract record available.
Inventors
- 👤 John P Mcdermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1654; C07F9/1655; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL HAVING A VISCOSITY IN THE RANGE OF ABOUT 35 TO 150 SSU AT 210* F. AND ABOUT 0.01 TO 20.0% BY WEIGHT, BASED ON TOTAL COMPOSITION, OF A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
44 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL HAVING A VISCOSITY IN THE RANGE OF ABOUT 35 TO 150 SSU AT 210* F. AND ABOUT 0.01 TO 20.0% BY WEIGHT, BASED ON TOTAL COMPOSITION, OF A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
US2531129A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |