Method of manufacturing a component of a rotary machine and component manufactured using said method
US-10857621-B2 · Dec 8, 2020 · US
bladed diffusers
bladed diffusers · 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 | F04D29/448 |
| Official title | {bladed diffusers} |
| Display label | bladed diffusers |
| Total patents | 136 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 8 |
| 2017 | 16 |
| 2018 | 8 |
| 2019 | 13 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 13 |
| 2023 | 8 |
| 2024 | 24 |
| 2025 | 12 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Impeller and rotating machine
US-10859092-B2 · Dec 8, 2020 · US
Permanent magnet pump with bearings separating modular sections
US-2020340481-A1 · Oct 29, 2020 · US
Anti-swirl rib system for a pump
US-10738794-B2 · Aug 11, 2020 · US
Apertures spaced around impeller bottom shroud of centrifugal pump
US-10731651-B2 · Aug 4, 2020 · US
Vortex adaption preventer
US-2020149549-A1 · May 14, 2020 · US
Metal-to-metal sealing for diffusers of an electrical submersible well pump
US-10533578-B2 · Jan 14, 2020 · US
Centrifugal pump assembly comprising at least one impeller producing flow through and an annular space divided by at least two guide vanes into part-annular-spaces
US-10400792-B2 · Sep 3, 2019 · US
Multistage centrifugal grinder pump
US-2019264690-A1 · Aug 29, 2019 · US
Pump assembly for a dishwashing appliance
US-10349810-B2 · Jul 16, 2019 · US
Pump assembly for a dishwashing appliance
US-10349809-B2 · Jul 16, 2019 · US
Impeller and rotating machine
US-2019211837-A1 · Jul 11, 2019 · US
Pump plate for conditioning fluid flow in a dishwasher
US-10321797-B2 · Jun 18, 2019 · US
Pump intake device
US-10323652-B2 · Jun 18, 2019 · US
Liquid heating pump for conveying and heating liquid in a household appliance which uses water
US-2019128284-A1 · May 2, 2019 · US
Liquid heating pump for conveying and heating liquid in a water-bearing domestic appliance
US-2019093671-A1 · Mar 28, 2019 · US
Flow conditioning feature for suction diffuser
US-10240611-B2 · Mar 26, 2019 · US
Screw pump and impeller fan assemblies and method of operating
US-10240609-B2 · Mar 26, 2019 · US
Pump assembly for a dishwashing appliance
US-2019046000-A1 · Feb 14, 2019 · US
Pump assembly for a dishwashing appliance
US-2019046001-A1 · Feb 14, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/448?
- CPC F04D29/448 is the Cooperative Patent Classification code for “bladed diffusers.”
- How many patents are filed under CPC F04D29/448 (bladed diffusers)?
- Our database includes 136 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/448 growing?
- Publication counts under this code: 24 in 2024 vs 12 in 2025 (latest complete years).