Axial fan with additional flow channel
US-9494162-B2 · Nov 15, 2016 · US
cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)
cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence) · 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 | F04D29/584 |
| Official title | {cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence)} |
| Display label | cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence) |
| Total patents | 856 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 55 |
| 2016 | 71 |
| 2017 | 79 |
| 2018 | 89 |
| 2019 | 94 |
| 2020 | 95 |
| 2021 | 88 |
| 2022 | 78 |
| 2023 | 74 |
| 2024 | 67 |
| 2025 | 53 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reversible fan module
US-9433124-B2 · Aug 30, 2016 · US
Turbocharger having compressor cooling arrangement and method
US-9291089-B2 · Mar 22, 2016 · US
Method for controlling temperature of a turbine engine compressor and compressor of a turbine engine
US-9267513-B2 · Feb 23, 2016 · US
Air blower for a motor-driven compressor
US-9261104-B2 · Feb 16, 2016 · US
Power-operated air blowing work apparatus
US-2015377253-A1 · Dec 31, 2015 · US
Rotor and gas turbine engine including same
US-2015369047-A1 · Dec 24, 2015 · US
Sensor
US-2015362463-A1 · Dec 17, 2015 · US
Turbo-molecular pump
US-2015354577-A1 · Dec 10, 2015 · US
Subsea motor-compressor cooling system
US-9206819-B2 · Dec 8, 2015 · US
Vacuum pump
US-2015345499-A1 · Dec 3, 2015 · US
Method and system for cooling a motor-compressor with a closed-loop cooling circuit
US-9200643-B2 · Dec 1, 2015 · US
Supercharger with electric motor and engine device provided with supercharger with electric motor
US-2015337850-A1 · Nov 26, 2015 · US
Air compression apparatus
US-2015330408-A1 · Nov 19, 2015 · US
Turbomachine having a temperature-controlled cover
US-2015330407-A1 · Nov 19, 2015 · US
Fan rotor with cooling holes
US-9188136-B2 · Nov 17, 2015 · US
Systems and methods to control flow in a rotor wheel
US-9188010-B2 · Nov 17, 2015 · US
Ventilating fan for heating
US-9188361-B2 · Nov 17, 2015 · US
Multistage compressor and method for operating a multistage compressor
US-2015316064-A1 · Nov 5, 2015 · US
Fluid-cooling device for a turbine engine propulsive unit
US-9175695-B2 · Nov 3, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/584?
- CPC F04D29/584 is the Cooperative Patent Classification code for “cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence).”
- How many patents are filed under CPC F04D29/584 (cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence))?
- Our database includes 856 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/584 growing?
- Publication counts under this code: 67 in 2024 vs 53 in 2025 (latest complete years).