Variable valve device of vehicle air intake system
US-11603812-B1 · Mar 14, 2023 · US
Flap valves
Flap 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 | F02B27/0273 |
| Official title | {Flap valves} |
| Display label | Flap valves |
| Total patents | 53 |
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 | 12 |
| 2016 | 5 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 9 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Variable Valve Device of Vehicle Air Intake System
US-2023056467-A1 · Feb 23, 2023 · US
Internal combustion engine system operable in at least two operating modes
US-11512672-B2 · Nov 29, 2022 · US
Internal combustion engine system operable in at least two operating modes
US-2022341379-A1 · Oct 27, 2022 · US
Variable intake system for vehicle
US-11333110-B2 · May 17, 2022 · US
Variable intake system for vehicle
US-2021293207-A1 · Sep 23, 2021 · US
Intake manifold
US-2021180548-A1 · Jun 17, 2021 · US
Intake manifold
US-11035328-B1 · Jun 15, 2021 · US
Intake manifold
US-10859041-B2 · Dec 8, 2020 · US
Intake Manifold
US-2020182203-A1 · Jun 11, 2020 · US
Fresh air supply device for an internal combustion engine of a motor vehicle
US-10557420-B2 · Feb 11, 2020 · US
Valve unit including an interface
US-10487710-B2 · Nov 26, 2019 · US
Fresh air supply device for an internal combustion engine of a motor vehicle
US-2019345877-A1 · Nov 14, 2019 · US
Air intake device and air intake control valve
US-10352252-B2 · Jul 16, 2019 · US
Variable intake system
US-10267273-B2 · Apr 23, 2019 · US
Method and apparatus for controlling quantity of suction air
US-10233878-B2 · Mar 19, 2019 · US
Fresh air supply system for an internal combustion engine of a motor vehicle
US-2019032610-A1 · Jan 31, 2019 · US
Intake device of internal combustion engine
US-10184362-B2 · Jan 22, 2019 · US
Fuel injection unit for internal combustion engine
US-10184435-B2 · Jan 22, 2019 · US
Intake air control apparatus for vehicle
US-10174727-B2 · Jan 8, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B27/0273?
- CPC F02B27/0273 is the Cooperative Patent Classification code for “Flap valves.”
- How many patents are filed under CPC F02B27/0273 (Flap valves)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC F02B27/0273 growing?
- Publication counts under this code: 3 in 2022 vs 2 in 2023 (latest complete years).