Hybrid magnetic radial bearing in an electric submersible pump (esp) assembly
US-2021372471-A1 · Dec 2, 2021 · US
Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05)
Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05) · 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 | F04D29/04 |
| Official title | Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05) |
| Display label | Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05) |
| Total patents | 72 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 6 |
| 2017 | 10 |
| 2018 | 6 |
| 2019 | 11 |
| 2020 | 11 |
| 2021 | 10 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Shielding for a magnetic bearing in an electric submersible pump (esp) assembly
US-2021372242-A1 · Dec 2, 2021 · US
Integral rotor bore and bore basket
US-11067090-B1 · Jul 20, 2021 · US
Water pump including supporting structure for impeller
US-11035373-B2 · Jun 15, 2021 · US
Electric blower and electric equipment
US-10947994-B2 · Mar 16, 2021 · US
Electric compressor
US-10941788-B2 · Mar 9, 2021 · US
Cooling fan and heat dissipating module including the same
US-10921062-B2 · Feb 16, 2021 · US
Pump module having two impellers in series and a multiple plate housing
US-10895262-B2 · Jan 19, 2021 · US
Rotating body and turbocharger
US-2021003068-A1 · Jan 7, 2021 · US
Water pump
US-10859090-B2 · Dec 8, 2020 · US
Cooling fan and heat dissipating module including the same
US-2020378688-A1 · Dec 3, 2020 · US
Centrifugal pump with impeller centering and vibration dampening
US-10830242-B2 · Nov 10, 2020 · US
Centrifugal pump with noise dampening rubber isolation impeller bushing
US-10781828-B2 · Sep 22, 2020 · US
Stabilizing arrangement for a rotating vertical shaft of a machine, machine and stabilizing method
US-10760582-B2 · Sep 1, 2020 · US
Fluid pump and method for assembling the fluid pump
US-2020191149-A9 · Jun 18, 2020 · US
Bushing anti-rotation system and apparatus
US-10683868-B2 · Jun 16, 2020 · US
Electric device and electric supercharger
US-10634043-B2 · Apr 28, 2020 · US
Pump drive unit for conveying a process fluid
US-10634155-B2 · Apr 28, 2020 · US
Centrifugal pump with noise dampening rubber isolation impeller bushing
US-2020080571-A1 · Mar 12, 2020 · US
Water pump including supporting structure for impeller
US-2020032808-A1 · Jan 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/04?
- CPC F04D29/04 is the Cooperative Patent Classification code for “Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05).”
- How many patents are filed under CPC F04D29/04 (Shafts or bearings, or assemblies thereof (specially adapted for elastic fluid pumps F04D29/05))?
- Our database includes 72 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/04 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).