Systems and methods for a boosted internal combustion engine with an intake-side bypass line
US-2018355790-A1 · Dec 13, 2018 · US
air passages
air passages · 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 | F02B37/225 |
| Official title | {air passages} |
| Display label | air passages |
| Total patents | 189 |
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 | 11 |
| 2016 | 12 |
| 2017 | 22 |
| 2018 | 16 |
| 2019 | 37 |
| 2020 | 43 |
| 2021 | 26 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Slidable sleeve actuation system for a turbocharger compressor
US-2018340544-A1 · Nov 29, 2018 · US
Methods and systems for boost control based on exhaust pressure greater than a threshold
US-10119479-B2 · Nov 6, 2018 · US
Methods and system for a turbocharger
US-10107297-B2 · Oct 23, 2018 · US
Method for determining atmospheric pressure during the operation, in a partial load state, of a turbocharged engine
US-10100756-B2 · Oct 16, 2018 · US
Internal combustion engine, and device and method for controlling internal combustion engine
US-10094263-B2 · Oct 9, 2018 · US
Methods and systems for an engine start using an electrically drivable compressor
US-2018274436-A1 · Sep 27, 2018 · US
Adjustable-trim centrifugal compressor for a turbocharger
US-2018258842-A1 · Sep 13, 2018 · US
Exhaust system of internal combustion engine
US-2018245507-A1 · Aug 30, 2018 · US
Twin scroll turbocharger device with improved turbo response
US-10060340-B2 · Aug 28, 2018 · US
Device for exhaust-gas routing having a turbocharger
US-2018179907-A1 · Jun 28, 2018 · US
Centrifugal compressor and turbocharger
US-2018163731-A1 · Jun 14, 2018 · US
Vaporized fuel introduction apparatus
US-2018087476-A1 · Mar 29, 2018 · US
Twin scroll turbocharger device with bypass
US-9874138-B2 · Jan 23, 2018 · US
Valve device of turbocharger
US-9856787-B2 · Jan 2, 2018 · US
Turbocharger variable inlet duct
US-2017356396-A1 · Dec 14, 2017 · US
Internal combustion engine, and device and method for controlling internal combustion engine
US-2017306824-A1 · Oct 26, 2017 · US
Compressor Having a Variable Diffuser Width
US-2017306977-A1 · Oct 26, 2017 · US
Adjustable-trim centrifugal compressor for a turbocharger
US-2017298953-A1 · Oct 19, 2017 · US
Adjustable-trim centrifugal compressor for a turbocharger
US-2017298943-A1 · Oct 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B37/225?
- CPC F02B37/225 is the Cooperative Patent Classification code for “air passages.”
- How many patents are filed under CPC F02B37/225 (air passages)?
- Our database includes 189 publications tagged with this CPC code.
- Is patent activity under CPC F02B37/225 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).