US3572298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stratified charge engine
Assignee: Nippon Clean Engine Res Inst Co Ltd
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Filing: 1969-01-06
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Granted: 1971-03-23
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Expires: 1989-01-06
Abstract
Abstract AN INTERNAL COMBUSTION ENGINE OF THE STRATIFIED CHARGE TYPE WHEREIN THE PURIFICATION OF THE EXHAUST FAN FROM THE COMBUSTION CHAMBERS IS PROVIDED WITH ELIMINATION OF NOXIOUS COMPONENTS IN THE EMISSIONS THUS ATTAINING IMPROVED IGNITABILITY AND COMBUSTIBILITY PARTICULARLY FOR BETTERMENT OF PERFORMANCE AND DURABILITY IN FULL LOAD OPERATION.
Inventors
- 👤 Shigeru Onishi
- 👤 Saburo Yui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:20
CPC Classifications
F; F02; F02F; F02F1/00; F02B; F02B17/00; F02B17/005; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2275/00; F02B2275/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |