Rotary screw compressor
US-12523227-B2 · Jan 13, 2026 · US
Blades; Blade-carrying rotors
Blades; Blade-carrying rotors · 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 | F03B3/12 |
| Official title | Blades; Blade-carrying rotors |
| Display label | Blades; Blade-carrying rotors |
| Total patents | 36 |
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 | 1 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 3 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydropower device combining lift and drag effects
US-2025243838-A1 · Jul 31, 2025 · US
Method of manufacturing a component of a rotary machine and component manufactured using said method
US-12090569-B2 · Sep 17, 2024 · US
Conical turbine hydraulic machine
US-2024044312-A1 · Feb 8, 2024 · US
Rotary screw compressor
US-2022316480-A1 · Oct 6, 2022 · US
Rotary screw compressor rotor having work extraction mechanism
US-11359632-B2 · Jun 14, 2022 · US
Impeller manufacturing method and impeller flow path elongation jig
US-11333162-B2 · May 17, 2022 · US
Hydraulic turbine
US-11073124-B2 · Jul 27, 2021 · US
Method of manufacturing a component of a rotary machine and component manufactured using said method
US-2021039194-A1 · Feb 11, 2021 · US
Method of manufacturing a component of a rotary machine and component manufactured using said method
US-10857621-B2 · Dec 8, 2020 · US
Hydrostatic non-contact seal with offset outer ring
US-10731761-B2 · Aug 4, 2020 · US
Runner for a hydroelectric axial turbine or pump
US-2020158073-A1 · May 21, 2020 · US
Hydraulic Turbine
US-2020149505-A1 · May 14, 2020 · US
Actuator
US-2020141263-A1 · May 7, 2020 · US
Device for reversing a blade of a runner unit
US-10598144-B2 · Mar 24, 2020 · US
Impeller manufacturing method and impeller flow path elongation jig
US-2019376526-A1 · Dec 12, 2019 · US
Hydraulic turbine
US-10480480-B2 · Nov 19, 2019 · US
Device for reversing a blade of a runner unit
US-10247166-B2 · Apr 2, 2019 · US
Seal shoe for a hydrostatic non-contact seal device
US-10208615-B2 · Feb 19, 2019 · US
Hydrostatic non-contact seal with offset outer ring
US-2019017606-A1 · Jan 17, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03B3/12?
- CPC F03B3/12 is the Cooperative Patent Classification code for “Blades; Blade-carrying rotors.”
- How many patents are filed under CPC F03B3/12 (Blades; Blade-carrying rotors)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC F03B3/12 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).