US2679481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidants
Assignee: ExxonMobil Oil Corp
•
Filing: 1952-02-07
•
Granted: 1954-05-25
•
Expires: 1972-02-07
Abstract
No abstract record available.
Inventors
- 👤 Henry D Norris
- 👤 Ralph V White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:04
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A SOLVENT-REFINED MINERAL STEAM TURBINE LUBRICATING OIL CONTAINING A SMALL AMOUNT, SUFFICIENT TO STABILIZE IT AGAINST OXIDATION, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) COMPOUNDS HAVING THE FORMULA,
Claim 2
Dependent Claim
31 words
A SOLVENT-REFINED MINERAL STEAM TURBINE LUBRICATING OIL CONTAINING A SMALL AMOUNT, SUFFICIENT TO STABILIZE IT AGAINST OXIDATION, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) COMPOUNDS HAVING THE FORMULA,
References Cited (Backward Citations)
US2316587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |