Systems and Methods of Forming Audio Transducer Diaphragms
US-2018332419-A1 · Nov 15, 2018 · US
Non-planar diaphragms or cones
Non-planar diaphragms or cones · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04R7/12 |
| Official title | Non-planar diaphragms or cones |
| Display label | Non-planar diaphragms or cones |
| Total patents | 517 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 12 |
| 2017 | 26 |
| 2018 | 50 |
| 2019 | 50 |
| 2020 | 56 |
| 2021 | 56 |
| 2022 | 54 |
| 2023 | 60 |
| 2024 | 56 |
| 2025 | 63 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Unibody diaphragm and former for a speaker
US-2018115830-A1 · Apr 26, 2018 · US
Subwoofer with multi-lobe magnet
US-2018091878-A1 · Mar 29, 2018 · US
Audio driver and power supply unit architecture
US-9930444-B1 · Mar 27, 2018 · US
Speaker device
US-2017374439-A1 · Dec 28, 2017 · US
Electroacoustic transducer and electroacoustic transduction system
US-2017366902-A1 · Dec 21, 2017 · US
Speaker apparatus
US-2017332166-A1 · Nov 16, 2017 · US
Speaker apparatus
US-2017325031-A1 · Nov 9, 2017 · US
Capacitance type transducer and acoustic sensor
US-2017289702-A1 · Oct 5, 2017 · US
Loudspeaker, electronic apparatus using loudspeaker, and mobile body device
US-2017280247-A1 · Sep 28, 2017 · US
Loudspeaker Diaphragm
US-2017280245-A1 · Sep 28, 2017 · US
Transducer Diaphragm
US-2017245056-A1 · Aug 24, 2017 · US
Energy conversion apparatus and speaker structure
US-9736576-B2 · Aug 15, 2017 · US
Bending loudspeaker and wearable electronic products comprising the same
US-2017201833-A1 · Jul 13, 2017 · US
Electroacoustic Transducer
US-2017201834-A1 · Jul 13, 2017 · US
Transducer diaphragm
US-9693146-B2 · Jun 27, 2017 · US
Loudspeaker diaphragm
US-9681233-B2 · Jun 13, 2017 · US
Speaker
US-2017134863-A1 · May 11, 2017 · US
Approaching vehicle warning speaker device
US-2017111744-A1 · Apr 20, 2017 · US
Loudspeaker, electronic apparatus using loudspeaker, and mobile equipment using loudspeaker
US-9628916-B2 · Apr 18, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04R7/12?
- CPC H04R7/12 is the Cooperative Patent Classification code for “Non-planar diaphragms or cones.”
- How many patents are filed under CPC H04R7/12 (Non-planar diaphragms or cones)?
- Our database includes 517 publications tagged with this CPC code.
- Is patent activity under CPC H04R7/12 growing?
- Publication counts under this code: 56 in 2024 vs 63 in 2025 (latest complete years).