Control flap assembly for a gas flow in a fuel cell system
US-12469863-B2 · Nov 11, 2025 · US
Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position
Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position · 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 | F02D9/1015 |
| Official title | {Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position} |
| Display label | Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position |
| Total patents | 60 |
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 | 6 |
| 2016 | 3 |
| 2017 | 8 |
| 2018 | 12 |
| 2019 | 11 |
| 2020 | 6 |
| 2021 | 9 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Control flap assembly for a gas flow in a fuel cell system
US-2024079614-A1 · Mar 7, 2024 · US
Valve assembly for exhaust system
US-11702997-B2 · Jul 18, 2023 · US
Exhaust-gas flap device
US-11578671-B2 · Feb 14, 2023 · US
Exhaust-gas flap device
US-2022010738-A1 · Jan 13, 2022 · US
Engine throttle body hydrocarbon emissions reduction system
US-11149656-B1 · Oct 19, 2021 · US
Exhaust valve device for vehicle
US-11105274-B1 · Aug 31, 2021 · US
Exhaust valve device for vehicle
US-2021254561-A1 · Aug 19, 2021 · US
Butterfly valve including a valve body, shaft, groove portion and seal ring
US-11085543-B2 · Aug 10, 2021 · US
Valve Assembly For Exhaust System
US-2021199057-A1 · Jul 1, 2021 · US
Externally mounted in-line exhaust gas valve
US-10961923-B2 · Mar 30, 2021 · US
Flap device for an internal combustion engine
US-10954866-B2 · Mar 23, 2021 · US
Internal combustion engine with compressor, exhaust-gas recirculation arrangement and pivotable flap
US-10934945-B2 · Mar 2, 2021 · US
Externally mounted in-line exhaust gas valve
US-2021025340-A1 · Jan 28, 2021 · US
Exhaust-flow-rate control valve, and two-stage supercharging system provided with same
US-10844778-B2 · Nov 24, 2020 · US
Air intake apparatus of internal-combustion engine and air intake flow control valve
US-10830157-B2 · Nov 10, 2020 · US
Regulating device for an internal combustion engine
US-10767570-B2 · Sep 8, 2020 · US
Butterfly valve
US-2020240523-A1 · Jul 30, 2020 · US
Methods and systems for vacuum generation using a throttle
US-10590892-B2 · Mar 17, 2020 · US
Air intake apparatus of internal-combustion engine and air intake flow control valve
US-2020025112-A1 · Jan 23, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D9/1015?
- CPC F02D9/1015 is the Cooperative Patent Classification code for “Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position.”
- How many patents are filed under CPC F02D9/1015 (Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC F02D9/1015 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).