Constant volume combustion system
US-11619380-B2 · Apr 4, 2023 · US
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Reed valves
Reed valves · 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 | F01L3/205 |
| Official title | {Reed valves} |
| Display label | Reed valves |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Turbocharger for an internal combustion engine
US-11131242-B2 · Sep 28, 2021 · US
Turbocharger for an internal combustion engine
US-2021010420-A1 · Jan 14, 2021 · US
Constant volume combustion system
US-2020166207-A1 · May 28, 2020 · US
Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same
US-10371021-B2 · Aug 6, 2019 · US
Exhaust emission control device for internal combustion engine
US-10273905-B2 · Apr 30, 2019 · US
Valve arrangement
US-10233794-B2 · Mar 19, 2019 · US
Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same
US-2019003350-A1 · Jan 3, 2019 · US
Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same
US-10113452-B2 · Oct 30, 2018 · US
Cylinder lubrication system for two-stroke engine
US-9926821-B2 · Mar 27, 2018 · US
A valve arrangement
US-2017241304-A1 · Aug 24, 2017 · US
Exhaust emission control device for internal combustion engine
US-2016222922-A1 · Aug 4, 2016 · US
Harmonic uniflow engine
US-9291056-B2 · Mar 22, 2016 · US
Cylinder lubrication system for two-stroke engine
US-2015184563-A1 · Jul 2, 2015 · US
Double-reed exhaust valve engine
US-9068484-B2 · Jun 30, 2015 · US