Steam utilization system of factory producing concrete pipe pile
US-12485577-B2 · Dec 2, 2025 · US
for compressing
for compressing · 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 | F04F5/18 |
| Official title | for compressing |
| Display label | for compressing |
| Total patents | 66 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ejector and vacuum generating device including the same
US-12435737-B2 · Oct 7, 2025 · US
Fuel cell systems and methods of sizing and operating an ejector by using a by-pass valve
US-2024372119-A1 · Nov 7, 2024 · US
Recirculation gas flow control and distribution module for fuel cells
US-2024234758-A1 · Jul 11, 2024 · US
Fuel cell ejector
US-2024159251-A1 · May 16, 2024 · US
Apparatus for purifying gas
US-11980848-B2 · May 14, 2024 · US
Enhanced motor cooling system and method
US-11959499-B2 · Apr 16, 2024 · US
Blower
US-2024060508-A1 · Feb 22, 2024 · US
Variable jet pump
US-11828223-B2 · Nov 28, 2023 · US
Method and apparatus for desalinating water
US-11801451-B2 · Oct 31, 2023 · US
Coanda effect flow booster and aeraulic device comprising such a flow booster
US-2023270066-A1 · Aug 31, 2023 · US
Steam utilization system of factory producting concrete pipe pile
US-2023264387-A1 · Aug 24, 2023 · US
Apparatus for purifying gas
US-2023256387-A1 · Aug 17, 2023 · US
Method and apparatus for purifying gas
US-11660569-B2 · May 30, 2023 · US
Blower
US-2023081328-A1 · Mar 16, 2023 · US
Ejector and vacuum generating device including the same
US-2022403856-A1 · Dec 22, 2022 · US
Variable jet pump
US-2022381181-A1 · Dec 1, 2022 · US
Method for actuating a metering valve
US-2022384825-A1 · Dec 1, 2022 · US
Method and apparatus for desalinating water
US-2022362683-A1 · Nov 17, 2022 · US
Ejector
US-11460049-B2 · Oct 4, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04F5/18?
- CPC F04F5/18 is the Cooperative Patent Classification code for “for compressing.”
- How many patents are filed under CPC F04F5/18 (for compressing)?
- Our database includes 66 publications tagged with this CPC code.
- Is patent activity under CPC F04F5/18 growing?
- Publication counts under this code: 6 in 2024 vs 7 in 2025 (latest complete years).