Air conditioner
US-10156376-B2 · Dec 18, 2018 · US
rotors of the squirrel-cage type
rotors of the squirrel-cage type · 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 | F04D29/283 |
| Official title | {rotors of the squirrel-cage type} |
| Display label | rotors of the squirrel-cage type |
| Total patents | 155 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 22 |
| 2017 | 16 |
| 2018 | 21 |
| 2019 | 15 |
| 2020 | 13 |
| 2021 | 7 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 12 |
| 2025 | 11 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Centrifugal fan
US-10125774-B2 · Nov 13, 2018 · US
Centrifugal blower assemblies having a plurality of airflow guidance fins and method of assembling the same
US-2018258948-A1 · Sep 13, 2018 · US
Blower and air-conditioning apparatus including the same
US-2018238351-A1 · Aug 23, 2018 · US
Blower Housing Labyrinth Seal
US-2018156228-A1 · Jun 7, 2018 · US
Sirocco fan and air conditioner having same
US-9964118-B2 · May 8, 2018 · US
Fan Structure And Manufacturing Method Thereof
US-2018112676-A1 · Apr 26, 2018 · US
Fan, molding die, and fluid feeder
US-9869324-B2 · Jan 16, 2018 · US
Low Noise High Efficiency Centrifugal Blower
US-2017342992-A1 · Nov 30, 2017 · US
Cross-flow fan, molding die, and fluid feeder
US-9771947-B2 · Sep 26, 2017 · US
Fan impeller blade
US-9765793-B2 · Sep 19, 2017 · US
Cross flow fan and indoor unit of air-conditioning apparatus
US-9759220-B2 · Sep 12, 2017 · US
Centrifugal blower wheel for hvacr applications
US-2017234323-A1 · Aug 17, 2017 · US
Centrifugal blower
US-2017130723-A1 · May 11, 2017 · US
Cross flow fan
US-9638195-B2 · May 2, 2017 · US
Drive device and blower device
US-2017107994-A1 · Apr 20, 2017 · US
Cross-Flow Fan, Electronic Device, and Impeller
US-2017112019-A1 · Apr 20, 2017 · US
Centrifugal fan and air conditioner having the same
US-9624932-B2 · Apr 18, 2017 · US
Centrifugal fan
US-2017097015-A1 · Apr 6, 2017 · US
Centrifugal fan
US-2017089356-A1 · Mar 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/283?
- CPC F04D29/283 is the Cooperative Patent Classification code for “rotors of the squirrel-cage type.”
- How many patents are filed under CPC F04D29/283 (rotors of the squirrel-cage type)?
- Our database includes 155 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/283 growing?
- Publication counts under this code: 12 in 2024 vs 11 in 2025 (latest complete years).