Check valve
US-10436334-B2 · Oct 8, 2019 · US
with guided rigid valve members
with guided rigid valve members · 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 | F16K15/02 |
| Official title | with guided rigid valve members |
| Display label | with guided rigid valve members |
| Total patents | 163 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 9 |
| 2017 | 16 |
| 2018 | 23 |
| 2019 | 27 |
| 2020 | 15 |
| 2021 | 12 |
| 2022 | 12 |
| 2023 | 10 |
| 2024 | 19 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vacuum booster check valve
US-2019219185-A1 · Jul 18, 2019 · US
Water leakage preventing humidification apparatus
US-10234153-B2 · Mar 19, 2019 · US
Asymmetric Spring Valve Disk
US-2019003603-A1 · Jan 3, 2019 · US
Combined Inlet and Outlet Check Valve Seat
US-2019003598-A1 · Jan 3, 2019 · US
Fluid pressure control device for construction machine
US-10145391-B2 · Dec 4, 2018 · US
Drip Emitter With Check Valve
US-2018328498-A1 · Nov 15, 2018 · US
Pressure Regulating Check Valve
US-2018328142-A1 · Nov 15, 2018 · US
Pool Cleaner Check Valve
US-2018328502-A1 · Nov 15, 2018 · US
Connecting rod for an internal combustion engine with variable compression
US-2018328276-A1 · Nov 15, 2018 · US
Valves including multiple seats and related assemblies and methods
US-10125874-B2 · Nov 13, 2018 · US
Gas purge filter
US-2018308733-A1 · Oct 25, 2018 · US
Non-Return Valve for Flue Gas Venting and Damper Assembly for Use Therein
US-2018283685-A1 · Oct 4, 2018 · US
Bypass check valve and venturi having same
US-2018283578-A1 · Oct 4, 2018 · US
Check valve for connecting rod of variable compression internal comustion engine and connecting rod with the check valve
US-2018230900-A1 · Aug 16, 2018 · US
Hydraulic module for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression and a connecting rod
US-2018202469-A1 · Jul 19, 2018 · US
Bypass check valve and venturi devices having the same
US-10024458-B2 · Jul 17, 2018 · US
Control of hydraulic tensioner tuning using hole size in piston nose
US-2018172116-A1 · Jun 21, 2018 · US
Testable Back Pressure Valves
US-2018163506-A1 · Jun 14, 2018 · US
Valve of a piston pump with a closing body
US-9982671-B2 · May 29, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/02?
- CPC F16K15/02 is the Cooperative Patent Classification code for “with guided rigid valve members.”
- How many patents are filed under CPC F16K15/02 (with guided rigid valve members)?
- Our database includes 163 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/02 growing?
- Publication counts under this code: 19 in 2024 vs 10 in 2025 (latest complete years).