Reciprocating compressor
US-9850893-B2 · Dec 26, 2017 · US
using solenoids
using solenoids · 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 | F04B17/04 |
| Official title | using solenoids |
| Display label | using solenoids |
| Total patents | 187 |
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 | 17 |
| 2016 | 16 |
| 2017 | 27 |
| 2018 | 17 |
| 2019 | 20 |
| 2020 | 21 |
| 2021 | 20 |
| 2022 | 12 |
| 2023 | 21 |
| 2024 | 11 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Actuator system with dual chambers
US-9835222-B2 · Dec 5, 2017 · US
Water Booster Control System and Method
US-2017335835-A1 · Nov 23, 2017 · US
Droplet forming device and droplet forming method
US-9821323-B2 · Nov 21, 2017 · US
Linear compressor
US-2017321671-A1 · Nov 9, 2017 · US
Linear compressor
US-2017321674-A1 · Nov 9, 2017 · US
Adapting device for linear compressor, and compressor provided with such device
US-9797388-B2 · Oct 24, 2017 · US
Double acting refrigeration compressor
US-9777717-B2 · Oct 3, 2017 · US
Fuel pump with improved delivery properties
US-2017268469-A1 · Sep 21, 2017 · US
Piston pump having a region having a non-magnetic material in the magnetic circuit
US-2017254317-A1 · Sep 7, 2017 · US
Method for controlling a reciprocating piston pump and device for carrying out the method
US-2017241413-A1 · Aug 24, 2017 · US
High pressure fuel pump for a fuel system
US-2017226977-A1 · Aug 10, 2017 · US
Linear actuator and method for operating such a linear actuator
US-2017218758-A1 · Aug 3, 2017 · US
Double-acting refrigeration compressor
US-2017211557-A1 · Jul 27, 2017 · US
Linear motor with electromagnetically actuated spring mover
US-9685847-B2 · Jun 20, 2017 · US
Piping enhancement for backflow prevention in a multiple loop, metal cooled nuclear reactor system
US-2017162280-A1 · Jun 8, 2017 · US
Water booster control system and method
US-9670918-B2 · Jun 6, 2017 · US
Method and device for actuating a reciprocating pump
US-2017114783-A1 · Apr 27, 2017 · US
Hermetic reciprocating compressor
US-9617985-B2 · Apr 11, 2017 · US
Linear compressor
US-9605666-B2 · Mar 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B17/04?
- CPC F04B17/04 is the Cooperative Patent Classification code for “using solenoids.”
- How many patents are filed under CPC F04B17/04 (using solenoids)?
- Our database includes 187 publications tagged with this CPC code.
- Is patent activity under CPC F04B17/04 growing?
- Publication counts under this code: 11 in 2024 vs 4 in 2025 (latest complete years).