Piezoelectric microphone
US-10524058-B2 · Dec 31, 2019 · US
using a piezoelectric polymer
using a piezoelectric polymer · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R17/025 |
| Official title | {using a piezoelectric polymer} |
| Display label | using a piezoelectric polymer |
| Total patents | 167 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 16 |
| 2017 | 9 |
| 2018 | 14 |
| 2019 | 14 |
| 2020 | 13 |
| 2021 | 12 |
| 2022 | 20 |
| 2023 | 24 |
| 2024 | 14 |
| 2025 | 19 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Acoustic transducer
US-10511902-B2 · Dec 17, 2019 · US
Piezoelectric element, piezoelectric actuator, and electronic apparatus
US-10424722-B2 · Sep 24, 2019 · US
Piezoelectric device
US-2019245133-A1 · Aug 8, 2019 · US
Piezoelectric microphone
US-2019222941-A1 · Jul 18, 2019 · US
Signal processing method of audio sensing device, and audio sensing system
US-10356509-B2 · Jul 16, 2019 · US
Directional acoustic sensor and electronic device including the same
US-2019174244-A1 · Jun 6, 2019 · US
Piezoelectric device
US-10312427-B2 · Jun 4, 2019 · US
Piezoelectric sensor
US-10305017-B2 · May 28, 2019 · US
Pickup sensor and biological sensor
US-2019141433-A1 · May 9, 2019 · US
Sensor
US-10234429-B2 · Mar 19, 2019 · US
Audio sensing device and method of acquiring frequency information
US-10225662-B2 · Mar 5, 2019 · US
Electroacoustic transducer
US-2018242087-A1 · Aug 23, 2018 · US
Electroacoustic transduction film and manufacturing method of electroacoustic transduction film
US-10038134-B2 · Jul 31, 2018 · US
Sensor unit and musical instrument
US-2018209838-A1 · Jul 26, 2018 · US
Micromechanical sound transducer system and corresponding manufacturing method
US-2018192204-A1 · Jul 5, 2018 · US
Auto voice trigger method and audio analyzer employing the same
US-2018130485-A1 · May 10, 2018 · US
Acoustic sensor assembly
US-2018125445-A1 · May 10, 2018 · US
Piezoelectric element including mesoporous piezoelectric thin film
US-2018123020-A1 · May 3, 2018 · US
Piezoresistive microphone and method of fabricating the same
US-9961450-B2 · May 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R17/025?
- CPC H04R17/025 is the Cooperative Patent Classification code for “using a piezoelectric polymer.”
- How many patents are filed under CPC H04R17/025 (using a piezoelectric polymer)?
- Our database includes 167 publications tagged with this CPC code.
- Is patent activity under CPC H04R17/025 growing?
- Publication counts under this code: 14 in 2024 vs 19 in 2025 (latest complete years).