Valve seat insert for engine head having venturi flow crowns and seating surface profiled for limiting valve recession
US-11060425-B2 · Jul 13, 2021 · US
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with liners (F02F1/4257, F02F1/4271 take precedence)
with liners (F02F1/4257, F02F1/4271 take precedence) · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02F1/4292 |
| Official title | {with liners (F02F1/4257, F02F1/4271 take precedence)} |
| Display label | with liners (F02F1/4257, F02F1/4271 take precedence) |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Valve seat insert for engine head having venturi flow crowns and seating surface profiled for limiting valve recession
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US-9188079-B2 · Nov 17, 2015 · US