US2994408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature lubricant
Assignee: Shell USA Inc
•
Filing: 1957-09-12
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Granted: 1961-08-01
•
Expires: 1977-09-12
Abstract
No abstract record available.
Inventors
- 👤 Stanley S Sorem
- 👤 Charles H Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR LUBRICATING ENGINES OPERATING AT TEMPERATURES OF 800*F. WHICH COMPRISES BLANKETING THE PARTS REQUIRING LUBRICATION WITH A BLEND OF AIR AND ESSENTIALLY SULFUR-FREE AND AROMATIC-FREE HYDROCARBON HAVING A BOILING RANGE OF 160-600*F. IN THE WEIGHT RATIO OF 7:1 TO 10:1, RESPECTIVELY, AND CONTAINING ABOUT 0.01% TO ABOUT 5% OF A TRIALKYL PHOSPHITE.
Claim 2
Dependent Claim
54 words
A PROCESS FOR LUBRICATING ENGINES OPERATING AT TEMPERATURES OF 800*F. WHICH COMPRISES BLANKETING THE PARTS REQUIRING LUBRICATION WITH A BLEND OF AIR AND ESSENTIALLY SULFUR-FREE AND AROMATIC-FREE HYDROCARBON HAVING A BOILING RANGE OF 160-600*F. IN THE WEIGHT RATIO OF 7:1 TO 10:1, RESPECTIVELY, AND CONTAINING ABOUT 0.01% TO ABOUT 5% OF A TRIALKYL PHOSPHITE.
References Cited (Backward Citations)
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Cited
CA455494A
Cited
US2101632A
Cited
US2167867A
Cited
US2531441A
Cited
GB680619A
Cited
US2764866A
Cited
US2801968A
Cited
US2841244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |