Electromagnetic Actuator For A Display With Improved Spring Arrangement And Output Device with Said Actuator
US-2024203389-A1 · Jun 20, 2024 · US
Transducers of moving-coil, moving-strip, or moving-wire type
Transducers of moving-coil, moving-strip, or moving-wire type · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R9/00 |
| Official title | Transducers of moving-coil, moving-strip, or moving-wire type |
| Display label | Transducers of moving-coil, moving-strip, or moving-wire type |
| Total patents | 64 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 11 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 6 |
| 2021 | 12 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electromagnetic actuator for a display with improved spring arrangement and output device with said actuator
US-11948549-B2 · Apr 2, 2024 · US
Display apparatus
US-11592863-B2 · Feb 28, 2023 · US
MEMS sound transducer
US-11589169-B2 · Feb 21, 2023 · US
Sound vibration actuator
US-11569722-B2 · Jan 31, 2023 · US
Earphone
US-2022312101-A1 · Sep 29, 2022 · US
Mounting substrate
US-11367555-B2 · Jun 21, 2022 · US
Electromagnetic actuator with improved spring arrangement
US-11341948-B2 · May 24, 2022 · US
Loudspeaker assembly and electronic device
US-11290792-B2 · Mar 29, 2022 · US
Electric element
US-11183915-B2 · Nov 23, 2021 · US
Content presentation system, content presentation device, and wind presenting device
US-11148048-B2 · Oct 19, 2021 · US
Method for simultaneously operating a loudspeaker assembly in a loudspeaker function and in a microphone function, and loudspeaker assembly
US-11146890-B2 · Oct 12, 2021 · US
Method for simultaneously operating a loudspeaker assembly in a loudspeaker function and in a microphone function, and loudspeaker assembly
US-2021250692-A1 · Aug 12, 2021 · US
Display apparatus
US-2021149440-A1 · May 20, 2021 · US
Display apparatus
US-11012781-B2 · May 18, 2021 · US
Display apparatus
US-10915138-B2 · Feb 9, 2021 · US
Content presentation system, content presentation device, and wind presenting device
US-2021016164-A1 · Jan 21, 2021 · US
Electromagnetic Actuator For A Display With Improved Spring Arrangement And Output Device with Said Actuator
US-2021020153-A1 · Jan 21, 2021 · US
Electromagnetic Actuator with Improved Spring Arrangement
US-2021021933-A1 · Jan 21, 2021 · US
Electromagnetic driving device
US-2021016321-A1 · Jan 21, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R9/00?
- CPC H04R9/00 is the Cooperative Patent Classification code for “Transducers of moving-coil, moving-strip, or moving-wire type.”
- How many patents are filed under CPC H04R9/00 (Transducers of moving-coil, moving-strip, or moving-wire type)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC H04R9/00 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).