Pump unit for a centrifugal pump and a centrifugal pump
US-2025334122-A1 · Oct 30, 2025 · US
Shaftless rotors (F04D13/024 takes precedence)
Shaftless rotors (F04D13/024 takes 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 | F04D29/186 |
| Official title | {Shaftless rotors (F04D13/024 takes precedence)} |
| Display label | Shaftless rotors (F04D13/024 takes precedence) |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 7 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Centrifugal blood pump with hydrodynamic bearing
US-2025188937-A1 · Jun 12, 2025 · US
Centrifugal blood pump with hydrodynamic bearing
US-12196210-B2 · Jan 14, 2025 · US
Centrifugal pump and a pump housing
US-12188475-B2 · Jan 7, 2025 · US
Shaftless rotary machine
US-12117016-B2 · Oct 15, 2024 · US
Aircraft with ram air turbine disk with generator having blade shroud ring integrated magnets
US-2023358148-A1 · Nov 9, 2023 · US
Aircraft with ram air turbine disk with generator having blade shroud ring integrated magnets
US-11719119-B1 · Aug 8, 2023 · US
Shaftless rotary machine
US-2023175523-A1 · Jun 8, 2023 · US
Integrated electric submersible pumping system with electromagnetically driven impeller
US-11643911-B2 · May 9, 2023 · US
Pumping device, a single-use device and a method for operating a pumping device
US-11619236-B2 · Apr 4, 2023 · US
Rotating device and aircraft
US-11584508-B2 · Feb 21, 2023 · US
Pump assembly, in particular for supplying a slide ring seal assembly
US-11585346-B2 · Feb 21, 2023 · US
Centrifugal blood pump with hydrodynamic bearing
US-2022042511-A1 · Feb 10, 2022 · US
Pumping device, a single-use device and a method for operating a pumping device
US-2021254623-A1 · Aug 19, 2021 · US
Centrifugal blood pump with hydrodynamic bearing
US-11092158-B2 · Aug 17, 2021 · US
Centrifugal pump and a pump housing
US-2021079922-A1 · Mar 18, 2021 · US
Motorized pump
US-10941778-B2 · Mar 9, 2021 · US
Pump assembly, in particular for supplying a slide ring seal assembly
US-2021025396-A1 · Jan 28, 2021 · US
Combined pump and motor with a stator forming a cavity which houses an impeller between upper and lower diffusers with the impeller having a circumferential magnet array extending upward and downward into diffuser annular clearances
US-10876534-B2 · Dec 29, 2020 · US
Motorized pump
US-2020355184-A1 · Nov 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/186?
- CPC F04D29/186 is the Cooperative Patent Classification code for “Shaftless rotors (F04D13/024 takes precedence).”
- How many patents are filed under CPC F04D29/186 (Shaftless rotors (F04D13/024 takes precedence))?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/186 growing?
- Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).