Patent US2935476A successfully refreshed from Google Patents.
US2935476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon deposit reduction
Assignee: Sunoco Inc
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Filing: 1957-09-30
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Granted: 1960-05-03
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Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:33
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1233; C10L1/1258
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
COMPOSITION FOR USE IN INTERNAL COMBUSTION ENGINES, AND EFFECTIVE FOR REDUCING THE QUANTITY OF CARBONACEOUS COMBUSTION CHAMBER DEPOSITS THEREIN, SAID COMPOSITION COMPRISING A MAJOR AMOUNT OF A PETROLEUM HYDROCARBON FRACTION SELECTED FROM THE GROUP CONSISTING OF GASOLINE, DIESEL FUEL AND FISCOUS PETROLEUM HYDROCARBON INTERNAL COMBUSTION ENGINE LUBRICANT, AND A MINOR AMOUNT, SUFFICIENT TO REDUCE THE QUANTITY OF CARBONACEOUS COMBUSTION CHAMBER DEPOSITS, OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF BARIUM PEROXIDE, STRONTIUM PEROXIDE AND MIXTURES THEREOF..
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 |