Loudspeaker and mobile body device having loudspeaker mounted thereon
US-2017303046-A1 · Oct 19, 2017 · US
Construction, mounting, or centering of coil
Construction, mounting, or centering of coil · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R9/04 |
| Official title | Construction, mounting, or centering of coil |
| Display label | Construction, mounting, or centering of coil |
| Total patents | 486 |
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 | 24 |
| 2017 | 29 |
| 2018 | 33 |
| 2019 | 36 |
| 2020 | 67 |
| 2021 | 55 |
| 2022 | 59 |
| 2023 | 57 |
| 2024 | 67 |
| 2025 | 26 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Miniature voice coil having helical lead-out for electro-acoustic transducer
US-9794666-B1 · Oct 17, 2017 · US
Panel vibration type sound generating actuator and double-faced display device including same
US-2017289694-A1 · Oct 5, 2017 · US
Bending loudspeaker and wearable electronic products comprising the same
US-2017201833-A1 · Jul 13, 2017 · US
Hybrid ring-radiator headphone driver
US-9686604-B2 · Jun 20, 2017 · US
Sound producing device
US-2017171664-A1 · Jun 15, 2017 · US
Loudspeaker, electronic apparatus using loudspeaker, and mobile equipment using loudspeaker
US-9628916-B2 · Apr 18, 2017 · US
Electroacoustic transducer
US-2017105072-A1 · Apr 13, 2017 · US
Electroacoustic Transducer
US-2017085979-A1 · Mar 23, 2017 · US
Loudspeaker Assembly Configuration
US-2016353207-A1 · Dec 1, 2016 · US
Energy converter, speaker, and method of manufacturing energy converter
US-9510100-B2 · Nov 29, 2016 · US
Speaker Basket
US-2016309262-A1 · Oct 20, 2016 · US
Electrodynamic exciter and vehicle lamp employing the same
US-9473854-B2 · Oct 18, 2016 · US
Loudspeaker assembly configuration
US-9451345-B2 · Sep 20, 2016 · US
Speaker terminals
US-9446559-B2 · Sep 20, 2016 · US
Audio playback device
US-9420377-B2 · Aug 16, 2016 · US
Loudspeaker, electronic apparatus using loudspeaker, and mobile equipment using loudspeaker
US-2016234601-A1 · Aug 11, 2016 · US
Actuator for vibrating a sound board in a musical instrument and method for attaching same
US-9406288-B2 · Aug 2, 2016 · US
Loudspeaker and mobile device incorporating same
US-2016212513-A1 · Jul 21, 2016 · US
Electrodynamic electroacoustic transducer, diaphragm thereof, and method of manufacturing the same
US-9398375-B2 · Jul 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R9/04?
- CPC H04R9/04 is the Cooperative Patent Classification code for “Construction, mounting, or centering of coil.”
- How many patents are filed under CPC H04R9/04 (Construction, mounting, or centering of coil)?
- Our database includes 486 publications tagged with this CPC code.
- Is patent activity under CPC H04R9/04 growing?
- Publication counts under this code: 67 in 2024 vs 26 in 2025 (latest complete years).