US3560387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oils
Assignee: Wintershall Dea International AG
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Filing: 1968-02-19
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Granted: 1971-02-02
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Expires: 1988-02-19
Abstract
Abstract LUBRICANT CONTAINING AS AN ESSENTIAL INGREDIENT IMPARTING LUBRICATING PROPERTIES. ESTER OF 2,2-DIALKYLPROPANEDIOL1,3 AND MONOCARBOXYLIC ACID, WHEREIN AT LEAST ONE OF THE ALKYL) GROUPS CONTAINS MORE THAN 4 CARBON ATOMS. THE LUBRICANTS ARE WELL SUITED FOR USE IN AIRCRAFT AND GAS TURBINE ENGINES.
Inventors
- 👤 Wolfgang Schritt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:22
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/28; C10M2207/283; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |