Blower
US-2024328434-A1 · Oct 3, 2024 · US
Layout of fluid flow through the stages
Layout of fluid flow through the stages · 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 | F04D19/028 |
| Official title | {Layout of fluid flow through the stages} |
| Display label | Layout of fluid flow through the stages |
| Total patents | 67 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 9 |
| 2021 | 3 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aeronautic propulsion system with improved propulsion efficiency
US-12078126-B2 · Sep 3, 2024 · US
Compressor flowpath
US-11971051-B2 · Apr 30, 2024 · US
Blower
US-2024110571-A1 · Apr 4, 2024 · US
Compressor flowpath
US-2023332622-A1 · Oct 19, 2023 · US
Dual ESP with selectable pumps
US-11773857-B2 · Oct 3, 2023 · US
Aeronautic propulsion system with improved propulsion efficiency
US-2023265813-A1 · Aug 24, 2023 · US
Compressor flowpath
US-11725670-B2 · Aug 15, 2023 · US
Compression system for a gas turbine, high-pressure compressor, compression system comprising a high-pressure compressor, low-pressure compressor, compression system comprising a low-pressure compressor, and gas turbine
US-2023160398-A1 · May 25, 2023 · US
Compressor flowpath
US-2023131276-A1 · Apr 27, 2023 · US
Aeronautic propulsion system with improved propulsion efficiency
US-2023013650-A1 · Jan 19, 2023 · US
Efficient gas turbine engine installation and operation
US-2022403743-A1 · Dec 22, 2022 · US
Compressor rotor blade airfoils
US-11519273-B1 · Dec 6, 2022 · US
Compressor rotor blade airfoils
US-2022372878-A1 · Nov 24, 2022 · US
Vacuum system with a multi-stage and multi-inlet vacuum pump with a directional element separating pump stages
US-11480181-B2 · Oct 25, 2022 · US
Efficient gas turbine engine installation and operation
US-11459893-B2 · Oct 4, 2022 · US
Compressor flowpath
US-11428242-B2 · Aug 30, 2022 · US
Compressor rotor blade airfoils
US-11414996-B1 · Aug 16, 2022 · US
Compressor stator vane airfoils
US-11326620-B1 · May 10, 2022 · US
Efficient gas turbine engine installation and operation
US-2021207483-A1 · Jul 8, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D19/028?
- CPC F04D19/028 is the Cooperative Patent Classification code for “Layout of fluid flow through the stages.”
- How many patents are filed under CPC F04D19/028 (Layout of fluid flow through the stages)?
- Our database includes 67 publications tagged with this CPC code.
- Is patent activity under CPC F04D19/028 growing?
- Publication counts under this code: 8 in 2024 vs 3 in 2025 (latest complete years).