US2935479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for engine deposit removal
Assignee: Sunoco Inc
•
Filing: 1956-07-02
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Granted: 1960-05-03
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Expires: 1976-07-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul E Oberdorfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:37
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L10/00; C10L10/06; C10L1/185; C10L1/1852; C10L1/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A SOLVENT COMPOSITION FOR THE REMOVAL OF ENGINE DEPOSITS CONSISTING ESSENTIALLY OF FROM ABOUT 40 TO 70% BY VOLUME ETHYL ACETATE, FROM ABOUT 2 TO 20% ETHYLENE GLYCOL MONOETHYL ETHER, AND FROM ABOUT 25 TO 60% OF A CYCLIC CARBONATE INNER ESTER HAVING THE FORMULA:
Claim 2
Dependent Claim
45 words
A SOLVENT COMPOSITION FOR THE REMOVAL OF ENGINE DEPOSITS CONSISTING ESSENTIALLY OF FROM ABOUT 40 TO 70% BY VOLUME ETHYL ACETATE, FROM ABOUT 2 TO 20% ETHYLENE GLYCOL MONOETHYL ETHER, AND FROM ABOUT 25 TO 60% OF A CYCLIC CARBONATE INNER ESTER HAVING 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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |