Diagonal fan wheel with increased strength
US-2021364011-A1 · Nov 25, 2021 · US
Helico-centrifugal pumps
Helico-centrifugal pumps · 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 | F04D17/06 |
| Official title | Helico-centrifugal pumps |
| Display label | Helico-centrifugal pumps |
| Total patents | 194 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 7 |
| 2017 | 4 |
| 2018 | 8 |
| 2019 | 16 |
| 2020 | 13 |
| 2021 | 22 |
| 2022 | 27 |
| 2023 | 35 |
| 2024 | 34 |
| 2025 | 20 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fan motor
US-2021348616-A1 · Nov 11, 2021 · US
Fan
US-11162498-B2 · Nov 2, 2021 · US
Air circulator
US-2021285686-A1 · Sep 16, 2021 · US
Air cleaner
US-2021278097-A1 · Sep 9, 2021 · US
Compact diagonal fan with outlet guide vane device
US-2021277910-A1 · Sep 9, 2021 · US
Rotor for gas turbine engine
US-11060406-B2 · Jul 13, 2021 · US
Mixed-flow fan
US-11053946-B2 · Jul 6, 2021 · US
Mixed-flow compressor configuration for a refrigeration system
US-2021123444-A1 · Apr 29, 2021 · US
Rotor for gas turbine engine
US-2021108516-A1 · Apr 15, 2021 · US
Fan motor
US-2021010487-A1 · Jan 14, 2021 · US
Electric blower, vacuum cleaner, and hand drying device
US-2020318646-A1 · Oct 8, 2020 · US
Gearbox with a shaft
US-10718353-B2 · Jul 21, 2020 · US
Fan system
US-2020173453-A1 · Jun 4, 2020 · US
Fan impeller
US-2020166047-A1 · May 28, 2020 · US
Air cleaner
US-2020158357-A1 · May 21, 2020 · US
Fan device and vacuum cleaner including the same
US-10641282-B2 · May 5, 2020 · US
Fan
US-2020124051-A1 · Apr 23, 2020 · US
Hvac compressor with mixed and radial compression stages
US-2020109879-A1 · Apr 9, 2020 · US
Mixed flow fan
US-10570906-B2 · Feb 25, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D17/06?
- CPC F04D17/06 is the Cooperative Patent Classification code for “Helico-centrifugal pumps.”
- How many patents are filed under CPC F04D17/06 (Helico-centrifugal pumps)?
- Our database includes 194 publications tagged with this CPC code.
- Is patent activity under CPC F04D17/06 growing?
- Publication counts under this code: 34 in 2024 vs 20 in 2025 (latest complete years).