Vent cover assemblies for railroad hopper cars
US-2025282396-A1 · Sep 11, 2025 · US
Means for ventilating only (ventilation in general F24F)
Means for ventilating only (ventilation in general F24F) · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B61D27/009 |
| Official title | {Means for ventilating only (ventilation in general F24F)} |
| Display label | Means for ventilating only (ventilation in general F24F) |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Noise Reduction Structure For Air Circulation Duct
US-2025229598-A1 · Jul 17, 2025 · US
Airflow guidance structures for refrigerated transport containers
US-2025121861-A1 · Apr 17, 2025 · US
Overhead ambient air control systems
US-2024408933-A1 · Dec 12, 2024 · US
Rail Vehicle and Manufacturing Method for Rail Vehicle
US-2024400118-A1 · Dec 5, 2024 · US
Interior air quality monitoring and ventilation control method and system for train
US-11999388-B2 · Jun 4, 2024 · US
Health protection system for passengers on a train in a polluted indoor environment and method thereof
US-11938784-B2 · Mar 26, 2024 · US
Comfort ventilation for a sanitary module for a vehicle
US-11834080-B2 · Dec 5, 2023 · US
Train compartment air adjustment and control method and apparatus, storage medium, and program product
US-2023366004-A1 · Nov 16, 2023 · US
Enhancing Antiviral Capabilities of Rail Vehicles and Air Filter
US-2023356760-A1 · Nov 9, 2023 · US
Methods for regulating air conditioning temperature of subways in smart citys and internet of things systems thereof
US-2023192157-A1 · Jun 22, 2023 · US
Comfort ventilation for a sanitary module for a vehicle
US-2023143478-A1 · May 11, 2023 · US
Device for cooling a component intended to be fitted to a vehicle and associated vehicle
US-2023139958-A1 · May 4, 2023 · US
Waste exhaust ventilation door automatic control device and vehicle body having the same
US-11383740-B2 · Jul 12, 2022 · US
Underfloor duct
US-11338830-B2 · May 24, 2022 · US
Interior air quality monitoring and ventilation control method and system for train
US-2022153320-A1 · May 19, 2022 · US
Pressure regulating apparatus in vehicle and regulating method
US-2022135090-A1 · May 5, 2022 · US
Ventilation module for a rail vehicle
US-11260405-B2 · Mar 1, 2022 · US
Side wall component of railway vehicle, and railway vehicle
US-11142227-B2 · Oct 12, 2021 · US
Fluid flow control valve equipped with an electric actuator and system including such a valve
US-11143326-B2 · Oct 12, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61D27/009?
- CPC B61D27/009 is the Cooperative Patent Classification code for “Means for ventilating only (ventilation in general F24F).”
- How many patents are filed under CPC B61D27/009 (Means for ventilating only (ventilation in general F24F))?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC B61D27/009 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).