US3682702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing manganese oxide deposits
Assignee: Ethyl Corp
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Filing: 1970-09-02
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Granted: 1972-08-08
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Expires: 1990-09-02
Abstract
Abstract A METHOD OF REMOVING MANAGNESE CONTAINING DEPOSITS FORMED ON THE SURFACES OF JET ENGINES FROM BURNING FUEL CONTAINING A CYCLOPENTADIENYL MANGANESE TRICARBONYL AS A SMOKE REDUCER; BY TREATING THE DEPOSIT COATED SURFACES WITH AN AQUEOUS SOLUTION OF A MINERAL ACID AN ORGANIC ACID HAVING AN IONIZATION CONSTANT AT 25*C. GREATER THAN 10**-3, EITHER IN THE PRESENCE OR ABSENCE OF H2O2 OR AN H2O2 SOURCE AS A PROMOTER.
Inventors
- 👤 Vincent F Hnizda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:26
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |