Drain hose and air conditioner including the same
US-2018347851-A1 · Dec 6, 2018 · US
Centrifugal or radial fans
Centrifugal or radial fans · 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 | F24F1/0022 |
| Official title | Centrifugal or radial fans |
| Display label | Centrifugal or radial fans |
| Total patents | 290 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 26 |
| 2017 | 22 |
| 2018 | 30 |
| 2019 | 29 |
| 2020 | 28 |
| 2021 | 27 |
| 2022 | 28 |
| 2023 | 30 |
| 2024 | 33 |
| 2025 | 29 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Centrifugal fan
US-10132328-B2 · Nov 20, 2018 · US
Turbo fan and air conditioner including same
US-2018283395-A1 · Oct 4, 2018 · US
Air conditioner
US-2018274797-A1 · Sep 27, 2018 · US
Ceiling-embedded air conditioner
US-10041696-B2 · Aug 7, 2018 · US
Ceiling-embedded air conditioner
US-10030876-B2 · Jul 24, 2018 · US
Air conditioner
US-2018135871-A1 · May 17, 2018 · US
System and method for detecting flow restrictions across a coil of an outdoor heat exchanger
US-2018031267-A1 · Feb 1, 2018 · US
Indoor unit for air conditioning device
US-2017276392-A1 · Sep 28, 2017 · US
Heat exchange unit and air-conditioning apparatus
US-2017254559-A1 · Sep 7, 2017 · US
Indoor unit for air conditioner
US-9752816-B2 · Sep 5, 2017 · US
Indoor unit of air-conditioning apparatus
US-2017219222-A1 · Aug 3, 2017 · US
Air conditioner
US-2017159946-A1 · Jun 8, 2017 · US
Air-conditioning-apparatus indoor unit
US-2017138614-A1 · May 18, 2017 · US
Air conditioner
US-2017115027-A1 · Apr 27, 2017 · US
Air conditioner and method for controlling the same
US-2017108229-A1 · Apr 20, 2017 · US
Centrifugal fan and air conditioner having the same
US-9624932-B2 · Apr 18, 2017 · US
Air conditioner and method for controlling the same
US-2017102154-A1 · Apr 13, 2017 · US
Air conditioning apparatus
US-9618216-B2 · Apr 11, 2017 · US
Centrifugal fan
US-2017097015-A1 · Apr 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24F1/0022?
- CPC F24F1/0022 is the Cooperative Patent Classification code for “Centrifugal or radial fans.”
- How many patents are filed under CPC F24F1/0022 (Centrifugal or radial fans)?
- Our database includes 290 publications tagged with this CPC code.
- Is patent activity under CPC F24F1/0022 growing?
- Publication counts under this code: 33 in 2024 vs 29 in 2025 (latest complete years).