Low noise blower
US-12595800-B1 · Apr 7, 2026 · US
specially for regenerative pumps
specially for regenerative 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 | F04D29/188 |
| Official title | {specially for regenerative pumps} |
| Display label | specially for regenerative pumps |
| Total patents | 49 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 8 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Regenerative blower
US-12331749-B2 · Jun 17, 2025 · US
Regenerative blower
US-2025154956-A1 · May 15, 2025 · US
Device for anode gas recirculation in a fuel cell system
US-2025087727-A1 · Mar 13, 2025 · US
Fluid pump impeller including blades extending from a hub to an outer ring and having a draft angle between adjacent blades that varies between the hub and the outer ring
US-12000411-B2 · Jun 4, 2024 · US
Multi-way coolant valve and heat pump system having the same
US-11761372-B2 · Sep 19, 2023 · US
Fluid pump and impeller thereof
US-2023220849-A1 · Jul 13, 2023 · US
Multi-way coolant valve and heat pump system having the same
US-2023065082-A1 · Mar 2, 2023 · US
Regenerative blower
US-2022282733-A1 · Sep 8, 2022 · US
Regenerative blower
US-11371515-B2 · Jun 28, 2022 · US
Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium
US-11335923-B2 · May 17, 2022 · US
Switchable mechanical motor vehicle coolant pump
US-2022099016-A1 · Mar 31, 2022 · US
Fuel pump
US-11242860-B2 · Feb 8, 2022 · US
Regenerative pump start stage for high speed centrifugal fuel pump
US-10927837-B2 · Feb 23, 2021 · US
Delivery device comprising a side channel blower or peripheral blower
US-2021033106-A1 · Feb 4, 2021 · US
Fluid pump
US-10876541-B2 · Dec 29, 2020 · US
Side-channel compressor for a fuel cell system for conveying and/or compressing a gaseous medium
US-2020343566-A1 · Oct 29, 2020 · US
Regenerative blower
US-2020309137-A1 · Oct 1, 2020 · US
Fluid pump
US-10711793-B2 · Jul 14, 2020 · US
Vortex pump
US-10662970-B2 · May 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/188?
- CPC F04D29/188 is the Cooperative Patent Classification code for “specially for regenerative pumps.”
- How many patents are filed under CPC F04D29/188 (specially for regenerative pumps)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/188 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).