Architecture of a turbomachine with counter-rotating turbine
US-12092020-B2 · Sep 17, 2024 · US
Mechanical Engineering
Mechanical Engineering · 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 | F04D19/024 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 142 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 10 |
| 2017 | 6 |
| 2018 | 9 |
| 2019 | 16 |
| 2020 | 18 |
| 2021 | 19 |
| 2022 | 23 |
| 2023 | 11 |
| 2024 | 11 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Surge free subsea compressor
US-10876536-B2 · Dec 29, 2020 · US
Axial flow fan device
US-2020378401-A1 · Dec 3, 2020 · US
Blower
US-2020378403-A1 · Dec 3, 2020 · US
Counter-rotating axial flow fan
US-10837448-B2 · Nov 17, 2020 · US
Efficient gas turbine engine installation and operation
US-2020291785-A1 · Sep 17, 2020 · US
Inline axial flow fan
US-2020149535-A1 · May 14, 2020 · US
Inline axial flow fan
US-2020149537-A1 · May 14, 2020 · US
Blower apparatus
US-2020095999-A1 · Mar 26, 2020 · US
Dryer
US-2020085252-A1 · Mar 19, 2020 · US
Thrust-balancing wet gas compressor
US-2020072229-A1 · Mar 5, 2020 · US
Efficient gas turbine engine installation and operation
US-10550700-B1 · Feb 4, 2020 · US
Improved arrangement for pressurizing of fluid
US-2020018317-A1 · Jan 16, 2020 · US
Counter rotating back-to-back fluid movement system
US-2019390683-A1 · Dec 26, 2019 · US
Axial fan
US-2019390677-A1 · Dec 26, 2019 · US
Electric fan
US-2019393763-A1 · Dec 26, 2019 · US
Compressor of axial turbine engine with contra-rotating rotor
US-10502143-B2 · Dec 10, 2019 · US
Aft counter-rotating boundary layer ingestion engine
US-2019309705-A1 · Oct 10, 2019 · US
Counter-rotating fan
US-2019301472-A1 · Oct 3, 2019 · US
Counter-rotating axial flow fan
US-2019301473-A1 · Oct 3, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04D19/024?
- CPC F04D19/024 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F04D19/024 (Mechanical Engineering)?
- Our database includes 142 publications tagged with this CPC code.
- Is patent activity under CPC F04D19/024 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).