Sound generator
US-11317218-B2 · Apr 26, 2022 · US
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Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R15/02 |
| Official title | Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency |
| Display label | Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
In-ear receiver
US-11178497-B2 · Nov 16, 2021 · US
Dual function transducer
US-11070920-B2 · Jul 20, 2021 · US
Dual function transducer
US-2021099804-A1 · Apr 1, 2021 · US
Sound generator
US-2020413201-A1 · Dec 31, 2020 · US
In-ear receiver
US-2020221238-A1 · Jul 9, 2020 · US
Audio signal correction and calibration for a room environment
US-10028055-B2 · Jul 17, 2018 · US
Audio signal correction and calibration for a room environment
US-2017311077-A1 · Oct 26, 2017 · US
Audio signal correction and calibration for a room environment
US-9699557-B2 · Jul 4, 2017 · US
Audio signal correction and calibration for a room environment
US-2016316295-A1 · Oct 27, 2016 · US
Cosmetic Powder Compositions for Delivering Actives
US-2016255440-A1 · Sep 1, 2016 · US
Audio signal correction and calibration for a room environment
US-9414164-B2 · Aug 9, 2016 · US
Audio signal correction and calibration for a room environment
US-2015237445-A1 · Aug 20, 2015 · US
Audio signal correction and calibration for a room environment
US-9036825-B2 · May 19, 2015 · US