Acoustic wave image generating apparatus and control method thereof
US-2017319173-A1 · Nov 9, 2017 · US
by combining a number of identical transducers {(specially adapted for hearing aids H04R25/405)}
by combining a number of identical transducers {(specially adapted for hearing aids H04R25/405)} · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R1/40 |
| Official title | by combining a number of identical transducers {(specially adapted for hearing aids H04R25/405)} |
| Display label | by combining a number of identical transducers {(specially adapted for hearing aids H04R25/405)} |
| Total patents | 402 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 23 |
| 2017 | 22 |
| 2018 | 34 |
| 2019 | 49 |
| 2020 | 48 |
| 2021 | 45 |
| 2022 | 46 |
| 2023 | 39 |
| 2024 | 39 |
| 2025 | 25 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Time delay estimation apparatus and time delay estimation method therefor
US-9791537-B2 · Oct 17, 2017 · US
Wearable device, display control method, and computer-readable recording medium
US-2017243600-A1 · Aug 24, 2017 · US
Wearable device, display control method, and computer-readable recording medium
US-2017243520-A1 · Aug 24, 2017 · US
Wearable device, display control method, and computer-readable recording medium
US-2017243519-A1 · Aug 24, 2017 · US
Audio processing apparatus, audio processing method, and program
US-2017229137-A1 · Aug 10, 2017 · US
Signal processing device, signal processing method, measurement method, and measurement device
US-9602916-B2 · Mar 21, 2017 · US
Method and apparatus for managing audio signals
US-9601132-B2 · Mar 21, 2017 · US
Acoustic device
US-9571917-B2 · Feb 14, 2017 · US
Multistage minimum variance distortionless response beamformer
US-9560463-B2 · Jan 31, 2017 · US
Sound pickup apparatus
US-9532134-B2 · Dec 27, 2016 · US
Beam-forming device
US-9503809-B2 · Nov 22, 2016 · US
Audio processing device and method, and program therefor
US-2016337777-A1 · Nov 17, 2016 · US
Variable directional microphone
US-9497538-B2 · Nov 15, 2016 · US
Array microphone system and method of assembling the same
US-2016323668-A1 · Nov 3, 2016 · US
Transmission line loudspeaker
US-9473848-B2 · Oct 18, 2016 · US
Multistage minimum variance distortionless response beamformer
US-2016277862-A1 · Sep 22, 2016 · US
Electronic device sound reproduction system
US-9448593-B2 · Sep 20, 2016 · US
Apparatus and method for focusing sound in array speaker system
US-9420374-B2 · Aug 16, 2016 · US
Audio signal processor, method, and program for suppressing noise components from input audio signals
US-9418676-B2 · Aug 16, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R1/40?
- CPC H04R1/40 is the Cooperative Patent Classification code for “by combining a number of identical transducers {(specially adapted for hearing aids H04R25/405)}.”
- How many patents are filed under CPC H04R1/40 (by combining a number of identical transducers {(specially adapted for hearing aids H04R25/405)})?
- Our database includes 402 publications tagged with this CPC code.
- Is patent activity under CPC H04R1/40 growing?
- Publication counts under this code: 39 in 2024 vs 25 in 2025 (latest complete years).