US2842499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New synthetic lubricants
Assignee: —
•
Filing: —
•
Granted: 1958-07-08
•
Expires: 1975-07-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/041; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/04; C10M2207/0406; C10N; C10N2020/00; C10N2020/01; C10N2020/011; C10N2020/015; C10N2020/017; C10N2020/02; C10N2020/04; C10N2030/00; C10N2030/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A SYNTHETIC LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A DIACETAL LUBRICATING OIL HAVING AN ASTM POUR POINT BELOW 35*F., A FLASH POINT ABOVE 375*F., AND A KINEMATIC VISCOSITY WITHIN THE RANGE OF 2.6 TO 13 CENTISTOKES AT 210*F., WHICH IS SELECTED FROM THE GROUP OF DIACETALS CONSISTING OF (1) DIACETALS HAVING THE FORMULA:
Claim 2
Dependent Claim
54 words
A SYNTHETIC LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A DIACETAL LUBRICATING OIL HAVING AN ASTM POUR POINT BELOW 35*F., A FLASH POINT ABOVE 375*F., AND A KINEMATIC VISCOSITY WITHIN THE RANGE OF 2.6 TO 13 CENTISTOKES AT 210*F., WHICH IS SELECTED FROM THE GROUP OF DIACETALS CONSISTING OF (1) DIACETALS HAVING THE FORMULA:
References Cited (Backward Citations)
US2360959A
Cited
US2668862A
Cited
US2431008A
Cited
US2460035A
Cited
US2512771A
Cited
US2499984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |