Dynamic Receiver with Resonance Protector for Earphone
US-2018352323-A1 · Dec 6, 2018 · US
of electromagnetic transducers
of electromagnetic 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 | H04R3/08 |
| Official title | of electromagnetic transducers |
| Display label | of electromagnetic transducers |
| Total patents | 175 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 17 |
| 2017 | 16 |
| 2018 | 25 |
| 2019 | 22 |
| 2020 | 14 |
| 2021 | 15 |
| 2022 | 12 |
| 2023 | 18 |
| 2024 | 10 |
| 2025 | 14 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Audio processor with linear and non-linear modeling including limiter
US-10104473-B2 · Oct 16, 2018 · US
System for reducing response anomalies in an acoustic pathway
US-10097917-B2 · Oct 9, 2018 · US
Loudspeaker diaphragm state estimation method and loudspeaker driving circuit using the same
US-2018288544-A1 · Oct 4, 2018 · US
Loudspeaker nonlinear compensation method and apparatus
US-10080085-B2 · Sep 18, 2018 · US
Speaker device and method for reducing distortion degree of speaker
US-10063208-B2 · Aug 28, 2018 · US
Loudspeaker diaphragm state estimation method and loudspeaker driving circuit using the same
US-10051394-B2 · Aug 14, 2018 · US
Audio control device
US-10034090-B2 · Jul 24, 2018 · US
Method of processing sound signal of electronic device and electronic device for same
US-2018167732-A1 · Jun 14, 2018 · US
Electromagnetic acoustic transducer excitation source with programmable tone burst generator
US-2018160229-A1 · Jun 7, 2018 · US
Monitoring and correcting apparatus for mounted transducers and method thereof
US-9980047-B2 · May 22, 2018 · US
Loudspeaker driving apparatus and loudspeaker driving method
US-2018138876-A1 · May 17, 2018 · US
Loudspeaker diaphragm state estimation method and loudspeaker driving circuit using the same
US-2018139552-A1 · May 17, 2018 · US
System for reducing response anomalies in an acoustic pathway
US-2018115823-A1 · Apr 26, 2018 · US
Audio control device
US-2018063639-A1 · Mar 1, 2018 · US
Receiver with coil wound on a stationary ferromagnetic core
US-9888322-B2 · Feb 6, 2018 · US
Speaker device and method for reducing distortion degree of speaker
US-2018026600-A1 · Jan 25, 2018 · US
Transducer assembly with acoustic mass
US-9877102-B2 · Jan 23, 2018 · US
Multiple receiver assembly and a method for assembly thereof
US-9854361-B2 · Dec 26, 2017 · US
Techniques for tuning the distortion response of a loudspeaker
US-9848262-B2 · Dec 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R3/08?
- CPC H04R3/08 is the Cooperative Patent Classification code for “of electromagnetic transducers.”
- How many patents are filed under CPC H04R3/08 (of electromagnetic transducers)?
- Our database includes 175 publications tagged with this CPC code.
- Is patent activity under CPC H04R3/08 growing?
- Publication counts under this code: 10 in 2024 vs 14 in 2025 (latest complete years).