Systems and methods for audio calibration using acoustic measurements
US-2017366909-A1 · Dec 21, 2017 · US
of electrostatic transducers
of electrostatic transducers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R3/06 |
| Official title | of electrostatic transducers |
| Display label | of electrostatic transducers |
| Total patents | 295 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 24 |
| 2017 | 45 |
| 2018 | 35 |
| 2019 | 45 |
| 2020 | 29 |
| 2021 | 20 |
| 2022 | 29 |
| 2023 | 21 |
| 2024 | 21 |
| 2025 | 10 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and means for regulating the electrical bias voltage at the measuring capacitor of a MEMS sensor element
US-9838767-B2 · Dec 5, 2017 · US
Microelectromechanical device, an array of microelectromechanical devices, a method of manufacturing a microelectromechanical device, and a method of operating a microelectromechanical device
US-2017325025-A1 · Nov 9, 2017 · US
System and Method for a High-Ohmic Resistor
US-2017318393-A1 · Nov 2, 2017 · US
Signal processing for mems capacitive transducers
US-2017284825-A1 · Oct 5, 2017 · US
System and Method for an Acoustic Transducer and Environmental Sensor Package
US-2017280237-A1 · Sep 28, 2017 · US
Digital microphones
US-2017251302-A1 · Aug 31, 2017 · US
Digital microphones
US-2017251303-A1 · Aug 31, 2017 · US
Hearing aid system and a method of operating a hearing aid system
US-2017245062-A1 · Aug 24, 2017 · US
Apparatus and method to bias mems motors
US-2017223455-A1 · Aug 3, 2017 · US
System and Method for Acoustic Transducer Supply
US-2017223450-A1 · Aug 3, 2017 · US
Microphone with specific audible area using ultrasound wave
US-2017188157-A1 · Jun 29, 2017 · US
Digital correcting network for microelectromechanical systems microphone
US-2017180858-A1 · Jun 22, 2017 · US
System and Method for Sensor-Supported Microphone
US-2017164118-A1 · Jun 8, 2017 · US
MEMS microphone and method of operating the MEMS microphone
US-9673767-B2 · Jun 6, 2017 · US
Capacitance type sensor, acoustic sensor, and microphone
US-9668063-B2 · May 30, 2017 · US
Independently charge pumps for differential microphone
US-2017150262-A1 · May 25, 2017 · US
Methods and apparatus for a delta sigma ADC with parallel-connected integrators
US-9647679-B1 · May 9, 2017 · US
Microphone with programmable frequency response
US-9602924-B2 · Mar 21, 2017 · US
Independently charge pumps for differential microphone
US-9602921-B2 · Mar 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R3/06?
- CPC H04R3/06 is the Cooperative Patent Classification code for “of electrostatic transducers.”
- How many patents are filed under CPC H04R3/06 (of electrostatic transducers)?
- Our database includes 295 publications tagged with this CPC code.
- Is patent activity under CPC H04R3/06 growing?
- Publication counts under this code: 21 in 2024 vs 10 in 2025 (latest complete years).