US2819211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfite ester synthetic lubricants
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-02-27
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Granted: 1958-01-07
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Expires: 1973-02-27
Abstract
No abstract record available.
Inventors
- 👤 Louis A Mikeska
- 👤 Jeffrey H Bartlett
- 👤 Charles E Thompson
- 👤 Arnold J Morway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:32
CPC Classifications
C; C07; C07C; C07C301/00; C10; C10M; C10M3/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10N; C10N2010/00; C10N2010/02; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A SYNTHETIC LUBRICATING COMPOSITION HAVING AN ASTM POUR POINT BELOW ABOUT 35*F., A FLASH POINT ABOVE ABOUT 300*F., AND A KINEMATIC VISCOSITY WITHIN THE RANGE OF 2 TO 60 CENTISTOKES, WHICH COMPRISES AN ESTER OF THE FORMULA
Claim 2
Dependent Claim
37 words
A SYNTHETIC LUBRICATING COMPOSITION HAVING AN ASTM POUR POINT BELOW ABOUT 35*F., A FLASH POINT ABOVE ABOUT 300*F., AND A KINEMATIC VISCOSITY WITHIN THE RANGE OF 2 TO 60 CENTISTOKES, WHICH COMPRISES AN ESTER OF THE FORMULA
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |