Negative pressure wound therapy device with silent piezoelectric pump
US-11754063-B2 · Sep 12, 2023 · US
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Resonant frequency
Resonant frequency · 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 | F04B2201/0806 |
| Official title | Resonant frequency |
| Display label | Resonant frequency |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Suction muffler for a reciprocating compressor
US-2023003206-A1 · Jan 5, 2023 · US
Suction muffler for a reciprocating compressor
US-11530695-B1 · Dec 20, 2022 · US
Hermetic compressor for positive displacement
US-11378311-B2 · Jul 5, 2022 · US
Negative pressure wound therapy device with silent piezoelectric pump
US-2021060216-A1 · Mar 4, 2021 · US
Linear compressor and methods of setpoint control
US-2020362842-A1 · Nov 19, 2020 · US
Hermetic Compressor for Positive Displacement
US-2018335233-A1 · Nov 22, 2018 · US
Method and a system for protecting a resonant linear compressor
US-10001119-B2 · Jun 19, 2018 · US
Method and a system for protecting a resonant linear compressor
US-2017009762-A1 · Jan 12, 2017 · US
Apparatus for controlling a linear compressor
US-9243620-B2 · Jan 26, 2016 · US