Pistons and piston assemblies for internal combustion engines
US-11959412-B2 · Apr 16, 2024 · US
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the liquid being directed into blind holes
the liquid being directed into blind holes · 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 | F02F3/225 |
| Official title | {the liquid being directed into blind holes} |
| Display label | the liquid being directed into blind holes |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piston having oil return passage
US-11846351-B2 · Dec 19, 2023 · US
Piston with oil return passage and engine
US-2023145204-A1 · May 11, 2023 · US
Pistons and piston assemblies for internal combustion engines
US-2022356834-A1 · Nov 10, 2022 · US
Combustion-chamber structure of engine
US-11078866-B1 · Aug 3, 2021 · US
Piston for internal combustion engine
US-10753311-B2 · Aug 25, 2020 · US
Piston for internal combustion engine
US-2020173394-A1 · Jun 4, 2020 · US
Piston for an internal combustion engine
US-10612489-B2 · Apr 7, 2020 · US
Piston for an internal combustion engine
US-2020003150-A1 · Jan 2, 2020 · US
Method for coating cooling channel with coating containing hexagonal boron nitride
US-10252293-B2 · Apr 9, 2019 · US
Piston for an internal combustion engine
US-10227948-B2 · Mar 12, 2019 · US
Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine
US-10208704-B2 · Feb 19, 2019 · US
Method for coating the surface of a closed cooling channel of a piston for an internal combustion engine and piston that can be produced by said method
US-2018163310-A1 · Jun 14, 2018 · US
Piston for an internal combustion engine
US-9784211-B2 · Oct 10, 2017 · US
Piston for an internal combustion engine
US-2017175671-A1 · Jun 22, 2017 · US
Pistion without a closed cooling chamber for internal combustion engines with at least one cooling oil nozzle per cylinder and method for cooling said piston
US-2017051703-A1 · Feb 23, 2017 · US
Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine
US-2016369740-A1 · Dec 22, 2016 · US
Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine
US-9470136-B2 · Oct 18, 2016 · US
Piston for an internal combustion engine
US-2015322887-A1 · Nov 12, 2015 · US
Piston Cooling Configuration Utilizing Lubricating Oil From Bearing Reservoir In An Opposed-Piston Engine
US-2015252715-A1 · Sep 10, 2015 · US