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US3658708A
Expired / Lapsed
US
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Compositions for eliminating deposits from the combustion chambers of internal combustion engines
Assignee: Ratlec SpA
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Filing: 1969-08-01
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Granted: 1972-04-25
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Expires: 1989-08-01
Abstract
Abstract LIQUID COMPOSITION CONSISTING OF A MIXTURE OF A BICYCLIC MONOTERPENE, E.G. FENCHONE AND THUJONE OF A LUBRICATING OIL AND OF A SOLVENT FOR LACQUERS, VARNISHES AND SLUDGES, THE COMPOSITION, AFTER HAVING BEEN INJECTED INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE AND ALLOWED TO REMAIN FOR ABOUT 30 MINUTES WHEN THE ENGINE IS HOT, CAUSES, AT THE RESTARTING OF THE ENGINE, THE DISSOLUTION OF ALL THE CARBON AND METAL DEPOSITS WHICH WERE PRESENT IN THE COMBUSTION CHAMBER.
Inventors
- 👤 Luigi Ratto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:52
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C10; C10L; C10L10/00; C10L10/06; C23G5/024
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |