Two-Stage Pump
US-2025361864-A1 · Nov 27, 2025 · US
specially adapted for reversible machines or pumps
specially adapted for reversible machines or pumps · 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 | F04C14/04 |
| Official title | specially adapted for reversible machines or pumps |
| Display label | specially adapted for reversible machines or pumps |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid rotary machine with an encoder module
US-2025207583-A1 · Jun 26, 2025 · US
Rotary Pump
US-2025198405-A1 · Jun 19, 2025 · US
Fluid delivery system with load-dependent rotational speed reversal of a rotary pump
US-12163515-B2 · Dec 10, 2024 · US
Fluid transfer apparatus
US-12158149-B2 · Dec 3, 2024 · US
Integrated pump device
US-2024337277-A1 · Oct 10, 2024 · US
Cooling system for electric drive device of vehicle
US-2024239182-A1 · Jul 18, 2024 · US
Pump Device for a Steering Device of a Vehicle, Steering Device, and Method and Device for Producing a Pump Device
US-2024124052-A1 · Apr 18, 2024 · US
Reversible gerotor pump system
US-11859614-B2 · Jan 2, 2024 · US
Pump unit for clutch actuation
US-11719239-B2 · Aug 8, 2023 · US
Liquid pump, in particular for providing a supply to a transmission or to a clutch in the drive train of a motor vehicle
US-11686306-B2 · Jun 27, 2023 · US
Fluid delivery system with load-dependent rotational speed reversal of a rotary pump
US-2023175505-A1 · Jun 8, 2023 · US
Variable oil pump
US-11668299-B2 · Jun 6, 2023 · US
Vane pump with tip-end-side guide surfaces provided between inner and outer notches of the discharge port and base-end-side guide surface provided in the back pressure port
US-11644031-B2 · May 9, 2023 · US
Reversible gerotor pump system
US-2023022514-A1 · Jan 26, 2023 · US
Coolant circuit for a drive device and method for operating a coolant circuit
US-11549765-B2 · Jan 10, 2023 · US
Internal gear pump
US-11486399-B2 · Nov 1, 2022 · US
Variable oil pump
US-2022316472-A1 · Oct 6, 2022 · US
Progressive cavity pump system having reverse mode
US-2022178368-A1 · Jun 9, 2022 · US
Fluid transfer apparatus
US-2022127997-A1 · Apr 28, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C14/04?
- CPC F04C14/04 is the Cooperative Patent Classification code for “specially adapted for reversible machines or pumps.”
- How many patents are filed under CPC F04C14/04 (specially adapted for reversible machines or pumps)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F04C14/04 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).