US3261723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing combustion chamber deposits in internal combustion engines
Assignee: MAN-GILL CHEMICAL COMPANY AN OH CORP
•
Filing: 1962-11-30
•
Granted: 1966-07-19
•
Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Willis G Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:15
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD FOR REDUCING THE FORMATION AND ACCUMULATION OF DEPOSITS IN THE FERROUS METAL COMBUSTION CHAMBER HEAD OF AN INTERNAL COMBUSTION ENGINE, WHICH METHOD COMPRISES TREATING SAID COMBUSTION CHAMBER HEAD WITH AN AQUEOUS PHOSPHATING SOLUTION HAVING A TOTAL ACIDITY WITHIN THE RANGE OF FROM ABOUT 5 TO ABOUT 300 POINTS AND CONTAINING AS ESSENTIAL INGREDIENTS THE PHOSPHATE ION AND A METALLIC ION SELECTED FROM THE GROUP CONSISTING OF MANGANESE, SODIUM, AND NICKEL IONS TO FORM THEREON AN INTEGRAL PHOSPHATE COATING OF AT LEAST ABOUT 25 MILLIGRAMS PER SQUARE FOOT OF SURFACE AREA.
Claim 2
Independent Claim
92 words
A METHOD FOR REDUCING THE FORMATION AND ACCUMULATION OF DEPOSITS IN THE FERROUS METAL COMBUSTION CHAMBER HEAD OF AN INTERNAL COMBUSTION ENGINE, WHICH METHOD COMPRISES TREATING SAID COMBUSTION CHAMBER HEAD WITH AN AQUEOUS PHOSPHATING SOLUTION HAVING A TOTAL ACIDITY WITHIN THE RANGE OF FROM ABOUT 5 TO ABOUT 300 POINTS AND CONTAINING AS ESSENTIAL INGREDIENTS THE PHOSPHATE ION AND A METALLIC ION SELECTED FROM THE GROUP CONSISTING OF MANGANESE, SODIUM, AND NICKEL IONS TO FORM THEREON AN INTEGRAL PHOSPHATE COATING OF AT LEAST ABOUT 25 MILLIGRAMS PER SQUARE FOOT OF SURFACE AREA.
References Cited (Backward Citations)
US1559439A
Cited
US1980518A
Cited
US2001754A
Cited
US2499261A
Cited
US2790739A
Cited
US3082128A
Cited
US3104177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |