Rotors for use in caustic environments
US-12460649-B2 · Nov 4, 2025 · US
for special materials
for special materials · 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 | F04D29/2227 |
| Official title | {for special materials} |
| Display label | for special materials |
| Total patents | 59 |
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 | 5 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Centrifugal pump for conveying media containing solids
US-12398724-B2 · Aug 26, 2025 · US
Lightweight Hydraulics Design for Improved 3D Printability
US-2024318658-A1 · Sep 26, 2024 · US
Method of manufacturing a component of a rotary machine and component manufactured using said method
US-12090569-B2 · Sep 17, 2024 · US
Centrifugal Pump for Conveying Media Containing Solids
US-2023258195-A1 · Aug 17, 2023 · US
Composite metal component and method of producing same
US-11668315-B2 · Jun 6, 2023 · US
Integrated electric submersible pumping system with electromagnetically driven impeller
US-11643911-B2 · May 9, 2023 · US
Method for manufacturing a turbomachine component
US-11448230-B2 · Sep 20, 2022 · US
Impeller design and manufacturing method with pentagonal channel geometry
US-11441572-B2 · Sep 13, 2022 · US
Molten metal rotor with hardened top
US-11391293-B2 · Jul 19, 2022 · US
Alloy article, method for manufacturing said alloy article, product formed of said alloy article, and fluid machine having said product
US-11359638-B2 · Jun 14, 2022 · US
Impeller and centrifugal pump
US-11346358-B2 · May 31, 2022 · US
Impeller design and manufacturing method with pentagonal channel geometry
US-2022056921-A1 · Feb 24, 2022 · US
Controllable coolant pump with a filter disc, filter disc, and the production thereof
US-2021190076-A1 · Jun 24, 2021 · US
Method of manufacturing supercharger
US-11028855-B2 · Jun 8, 2021 · US
Oil pump of vehicle having inner ring
US-11022134-B2 · Jun 1, 2021 · US
Method of manufacturing a component of a rotary machine and component manufactured using said method
US-2021039194-A1 · Feb 11, 2021 · US
Pump impeller, method of producing pump impeller, and pump with the pump impeller
US-10907644-B2 · Feb 2, 2021 · US
Method of manufacturing a component of a rotary machine and component manufactured using said method
US-10857621-B2 · Dec 8, 2020 · US
Impeller and centrifugal pump
US-2020378405-A1 · Dec 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D29/2227?
- CPC F04D29/2227 is the Cooperative Patent Classification code for “for special materials.”
- How many patents are filed under CPC F04D29/2227 (for special materials)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC F04D29/2227 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).