Pump Assembly with Hydraulic System Cooling
US-2026085676-A1 · Mar 26, 2026 · US
the fluid being elastic, e.g. steam or air
the fluid being elastic, e.g. steam or air · 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 | F04B9/12 |
| Official title | the fluid being elastic, e.g. steam or air |
| Display label | the fluid being elastic, e.g. steam or air |
| Total patents | 39 |
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 | 3 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pump and drive assembly
US-12553426-B2 · Feb 17, 2026 · US
Pump unit and air supply device
US-2025271789-A1 · Aug 28, 2025 · US
Turbine fracturing apparatus
US-12117023-B2 · Oct 15, 2024 · US
Medical fluid therapy machine including pneumatic pump box and accumulators therefore
US-2024200546-A1 · Jun 20, 2024 · US
Medical fluid therapy machine including pneumatic pump box and accumulators therefore
US-11946466-B2 · Apr 2, 2024 · US
Vessel pressure testing system
US-11933293-B2 · Mar 19, 2024 · US
Turbine Fracturing Apparatus
US-2023287908-A1 · Sep 14, 2023 · US
System for conveying and dispensing heated food material
US-11730174-B2 · Aug 22, 2023 · US
Turbine fracturing apparatus
US-11686329-B2 · Jun 27, 2023 · US
Pump and drive assembly
US-2023184235-A1 · Jun 15, 2023 · US
Turbine fracturing apparatus
US-2022412379-A1 · Dec 29, 2022 · US
Vessel pressure testing system
US-2022299022-A1 · Sep 22, 2022 · US
Motor cooling systems
US-11201524-B2 · Dec 14, 2021 · US
Moving microdroplets in a microfluidic device
US-2021123090-A1 · Apr 29, 2021 · US
Linear displacement pump with position sensing and related systems and methods
US-10954931-B2 · Mar 23, 2021 · US
Pumping installation comprising a pneumatic pump and a valve for regulating supply of the pump with compressed gas
US-10954934-B2 · Mar 23, 2021 · US
Pressure container for driving a medical device
US-2021077726-A1 · Mar 18, 2021 · US
Distribution unit
US-10900475-B2 · Jan 26, 2021 · US
Motor cooling systems
US-2020412205-A1 · Dec 31, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B9/12?
- CPC F04B9/12 is the Cooperative Patent Classification code for “the fluid being elastic, e.g. steam or air.”
- How many patents are filed under CPC F04B9/12 (the fluid being elastic, e.g. steam or air)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC F04B9/12 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).