Method for operating a fluid system and fluid system
US-12540684-B2 · Feb 3, 2026 · US
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having a free end
having a free end · 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 | F16K31/006 |
| Official title | {having a free end} |
| Display label | having a free end |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piezoelectric mems valve for an electronic device
US-12382833-B2 · Aug 5, 2025 · US
Independent dual actuation piezo valve for magnetic resonance environments
US-2025198530-A1 · Jun 19, 2025 · US
Method for operating a fluid system and fluid system
US-2025155044-A1 · May 15, 2025 · US
Piezo valve and valve system
US-2023296188-A1 · Sep 21, 2023 · US
Piezoelectric mems valve for an electronic device
US-2023270010-A1 · Aug 24, 2023 · US
Actuator, valve device, and fluid control apparatus
US-11231121-B2 · Jan 25, 2022 · US
Actuator, valve device, and fluid control apparatus
US-2021199210-A1 · Jul 1, 2021 · US
Servo valve
US-10767778-B2 · Sep 8, 2020 · US
Piezoelectric bimorph servo valve
US-2020166059-A1 · May 28, 2020 · US
Jet-flapper servo valve
US-2020096018-A1 · Mar 26, 2020 · US
Fluid control device and method for operating a fluid control device
US-10428846-B2 · Oct 1, 2019 · US
Servo valve
US-2019195381-A1 · Jun 27, 2019 · US
Fluid Control Device and Method for Operating a Fluid Control Device
US-2018298923-A1 · Oct 18, 2018 · US
Fluidic control element
US-9863543-B2 · Jan 9, 2018 · US
Variable damping system using a piezoelectric device
US-9777792-B2 · Oct 3, 2017 · US
Fluid valve
US-9683672-B2 · Jun 20, 2017 · US
Variable damping system using a piezoelectric device
US-2017159742-A1 · Jun 8, 2017 · US
Fluidic control element
US-2017045153-A1 · Feb 16, 2017 · US
Fluid Valve
US-2015219237-A1 · Aug 6, 2015 · US