Activation Signal For Solenoids And Method Of Activation
US-2026072457-A1 · Mar 12, 2026 · US
the fluid acting on a diaphragm
the fluid acting on a diaphragm · 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 | F16K31/385 |
| Official title | the fluid acting on a diaphragm |
| Display label | the fluid acting on a diaphragm |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 8 |
| 2020 | 8 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fill valve actuation systems and methods
US-2026002600-A1 · Jan 1, 2026 · US
Activation signal for solenoids and method of activation
US-12504774-B2 · Dec 23, 2025 · US
Electromagnetic control device and gas valve having same
US-12480594-B2 · Nov 25, 2025 · US
High-pressure fluid discharge device
US-12305674-B2 · May 20, 2025 · US
Inversion inhibitor for fluid control valve and methods of fluid control
US-12259066-B2 · Mar 25, 2025 · US
Activation Signal For Solenoids And Method Of Activation
US-2024385631-A1 · Nov 21, 2024 · US
High-pressure fluid discharge device
US-11867318-B2 · Jan 9, 2024 · US
Electromagnetic control device and gas valve having same
US-2023407985-A1 · Dec 21, 2023 · US
Balanced activation force and bistable valve system and method
US-11713817-B2 · Aug 1, 2023 · US
Actively controlled bleed valve
US-11674408-B1 · Jun 13, 2023 · US
Outlet valve
US-11578807-B2 · Feb 14, 2023 · US
Solenoid adapter
US-11578812-B2 · Feb 14, 2023 · US
High-pressure fluid discharge device
US-2022333700-A1 · Oct 20, 2022 · US
High-pressure fluid discharge device
US-2022205467-A1 · Jun 30, 2022 · US
Inversion inhibitor for fluid control valve and methods of fluid control
US-2022112959-A1 · Apr 14, 2022 · US
Self-cleaning water passageways on diaphragm insert
US-11300223-B2 · Apr 12, 2022 · US
Valve arrangement
US-11287052-B2 · Mar 29, 2022 · US
Compressed fluid discharge control device
US-11278940-B2 · Mar 22, 2022 · US
Fluidic devices and related haptic systems and methods
US-2022065355-A1 · Mar 3, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K31/385?
- CPC F16K31/385 is the Cooperative Patent Classification code for “the fluid acting on a diaphragm.”
- How many patents are filed under CPC F16K31/385 (the fluid acting on a diaphragm)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC F16K31/385 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).