Cylinder gas recirculation system device of internal combustion engine based on pressure differential driving
US-12123378-B1 · Oct 22, 2024 · US
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Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24 (internal-combustion aspects of rotary engines F02B57/00)
Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24 (internal-combustion aspects of rotary engines F02B57/00) · 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 | F02B25/26 |
| Official title | Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24 (internal-combustion aspects of rotary engines F02B57/00) |
| Display label | Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24 (internal-combustion aspects of rotary engines F02B57/00) |
| Total patents | 10 |
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 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for operating an internal combustion engine, and internal combustion engine
US-11073079-B2 · Jul 27, 2021 · US
Method for operating an internal combustion engine, and internal combustion engine
US-2020158013-A1 · May 21, 2020 · US
Reciprocating integral linear engine compressor
US-9957958-B2 · May 1, 2018 · US
Internal combustion engine with port communication
US-9896990-B2 · Feb 20, 2018 · US
Internal combustion engine with port communication
US-2017284283-A1 · Oct 5, 2017 · US
Internal combustion engine with port communication
US-9714604-B2 · Jul 25, 2017 · US
Reciprocating Compressor With Integral Engine and With Linear Cylinders
US-2017167478-A1 · Jun 15, 2017 · US
Internal combustion engine with port communication
US-2016040588-A1 · Feb 11, 2016 · US
Internal combustion engine with port communication
US-9181863-B2 · Nov 10, 2015 · US