Piston compressor
US-2021372384-A1 · Dec 2, 2021 · US
using solenoids directly actuating the piston
using solenoids directly actuating the piston · 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 | F04B17/044 |
| Official title | {using solenoids directly actuating the piston} |
| Display label | using solenoids directly actuating the piston |
| Total patents | 78 |
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 | 7 |
| 2016 | 8 |
| 2017 | 12 |
| 2018 | 10 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 2 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Drive system for a positive displacement pump
US-2021310475-A1 · Oct 7, 2021 · US
Product Dispensing System
US-2021262458-A1 · Aug 26, 2021 · US
Drive of a pump
US-11085409-B2 · Aug 10, 2021 · US
Operating method and actuation device for a piston pump
US-10989186-B2 · Apr 27, 2021 · US
Fluid pumping using electric linear motor
US-2021102530-A1 · Apr 8, 2021 · US
Volumetric pump
US-10920770-B2 · Feb 16, 2021 · US
Method for operating a piston pump, control device of a piston pump, and piston pump
US-10890167-B2 · Jan 12, 2021 · US
Product dispensing system
US-10859072-B2 · Dec 8, 2020 · US
Reciprocating pump injector
US-10859073-B2 · Dec 8, 2020 · US
Drive of a pump
US-2020378349-A1 · Dec 3, 2020 · US
Pump
US-2020318627-A1 · Oct 8, 2020 · US
Fluid apparatus and buffer tank for use therein
US-2020318771-A1 · Oct 8, 2020 · US
Piston Pump
US-2020309117-A1 · Oct 1, 2020 · US
Piston pump comprising a piston with a profiled front face
US-10781814-B2 · Sep 22, 2020 · US
Fuel pump with improved delivery properties
US-10619628-B2 · Apr 14, 2020 · US
Electromagnet membrane pump/transducer system and methods to make and use same
US-2020088184-A1 · Mar 19, 2020 · US
Systems and methods for operating a linear motor to prevent impacts with hard stops
US-10487632-B2 · Nov 26, 2019 · US
Piston pump and relative control method
US-2019301438-A1 · Oct 3, 2019 · US
Electrically-driven pressure regulator and volume-delivery unit
US-10421447-B2 · Sep 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B17/044?
- CPC F04B17/044 is the Cooperative Patent Classification code for “using solenoids directly actuating the piston.”
- How many patents are filed under CPC F04B17/044 (using solenoids directly actuating the piston)?
- Our database includes 78 publications tagged with this CPC code.
- Is patent activity under CPC F04B17/044 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).