US2698265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing carbon deposits from internal-combustion engines
Assignee: Standard Oil Co
•
Filing: 1950-12-15
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Granted: 1954-12-28
•
Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur R Klingel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:56
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF REMOVING DEPOSIT FROM THE COMBUSTION CHAMBERS OF AN INTERNAL COMBUSTION ENGINE WHICH COMPRISES INTRODUCING, OVER AN EXTENDED PERIOD OF TIME, INTO THE INTAKE MANIFORD FOR CONVEYANCE TO AND SUBSTANTIALLY EQUAL DISTRIBUTION AMONG THE ENGINE CYLINDERS WHILE THE ENGINE IS RUNNING, A PLURALITY OF PELLETS OF METAL HAVING A MELTING POINT ABOVE ABOUT 300* C. AND A BRINELI HARDNESS NUMBER BETWEEN ABOUT 3 AND 115.
Claim 2
Independent Claim
67 words
A METHOD OF REMOVING DEPOSIT FROM THE COMBUSTION CHAMBERS OF AN INTERNAL COMBUSTION ENGINE WHICH COMPRISES INTRODUCING, OVER AN EXTENDED PERIOD OF TIME, INTO THE INTAKE MANIFORD FOR CONVEYANCE TO AND SUBSTANTIALLY EQUAL DISTRIBUTION AMONG THE ENGINE CYLINDERS WHILE THE ENGINE IS RUNNING, A PLURALITY OF PELLETS OF METAL HAVING A MELTING POINT ABOVE ABOUT 300* C. AND A BRINELI HARDNESS NUMBER BETWEEN ABOUT 3 AND 115.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |