Coil module and actuator equipped with same
US-2022157503-A1 · May 19, 2022 · US
Transducers, loudspeakers, moving coil arrangements
Transducers, loudspeakers, moving coil arrangements · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F7/0289 |
| Official title | {Transducers, loudspeakers, moving coil arrangements} |
| Display label | Transducers, loudspeakers, moving coil arrangements |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 23 |
| 2021 | 13 |
| 2022 | 20 |
| 2023 | 14 |
| 2024 | 10 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optical-path folding-element with an extended two degree of freedom rotation range
US-2021348947-A1 · Nov 11, 2021 · US
Optical-path folding-element with an extended two degree of freedom rotation range
US-2021333126-A9 · Oct 28, 2021 · US
An optical-path folding-element with an extended two degree of freedom rotation range
US-2021333521-A9 · Oct 28, 2021 · US
Pot magnet for a moving coil arrangement in an electronic balance
US-11131574-B2 · Sep 28, 2021 · US
System and method utilizing an offset external magnet
US-2021296036-A1 · Sep 23, 2021 · US
Valve with energy-saving electrodynamic actuator
US-11118702-B2 · Sep 14, 2021 · US
Drive device including magnet units arranged in halbach array, shake correction device, and image capturing apparatus
US-2021258489-A1 · Aug 19, 2021 · US
Linearly enhanced circular magnetic field actuator
US-11094440-B2 · Aug 17, 2021 · US
Multilayer magnetic circuit assembly
US-2021246557-A1 · Aug 12, 2021 · US
Movable embedded microstructure
US-11051106-B2 · Jun 29, 2021 · US
Magnet, magnet structure, and rotational angle detector
US-10982974-B2 · Apr 20, 2021 · US
Speaker
US-10932051-B2 · Feb 23, 2021 · US
An optical-path folding-element with an extended two degree of freedom rotation range
US-2021048650-A1 · Feb 18, 2021 · US
Optical-path folding-element with an extended two degree of freedom rotation range
US-2020400464-A1 · Dec 24, 2020 · US
High-speed solenoid
US-2020402694-A1 · Dec 24, 2020 · US
Vibration generating device
US-10847296-B2 · Nov 24, 2020 · US
Movable embedded microstructure
US-2020344551-A1 · Oct 29, 2020 · US
Speaker
US-10820105-B2 · Oct 27, 2020 · US
Speaker
US-10820113-B2 · Oct 27, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F7/0289?
- CPC H01F7/0289 is the Cooperative Patent Classification code for “Transducers, loudspeakers, moving coil arrangements.”
- How many patents are filed under CPC H01F7/0289 (Transducers, loudspeakers, moving coil arrangements)?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC H01F7/0289 growing?
- Publication counts under this code: 10 in 2024 vs 10 in 2025 (latest complete years).