H04R 9/18
Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
H04R9/18 (Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency) appears on 38 US grants and 40 published applications in this corpus.
Search patents in H04R- Granted patents
- 38
- Published applications
- 40
- Assignees
- 37
- Inventors
- 95
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 5 |
| 2016 | 4 | 3 |
| 2017 | 4 | 4 |
| 2018 | 3 | 4 |
| 2019 | 4 | 3 |
| 2020 | 3 | 4 |
| 2021 | 4 | 2 |
| 2022 | 2 | 4 |
| 2023 | 1 | 4 |
| 2024 | 5 | 2 |
| 2025 | 0 | 1 |
| 2026 | 3 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for improved acousto-haptic speakers11 Aug 2026US 12,707,190 B2Immerz, Inc.
- Vibration sensors10 Feb 2026US 12,546,647 B2Shenzhen Shokz Co., Ltd.
- Audio-tactile transducer device based on dielectric electro-active elastomers13 Jan 2026US 12,526,582 B2Mateligent GmbH
- Magnetic potential transducer and electronic apparatus using same11 Jun 2024US 12,010,500 B2Goertek Inc.
- Multifunctional sounding device23 Apr 2024US 11,968,515 B2AAC Microtech (Changzhou) Co., Ltd.
- Loudspeakers and methods of use thereof1 May 2025US 2025/0142262 A1Brane Audio, LLC
- Systems and methods for improved acousto-haptic speakers3 Oct 2024US 2024/0334115 A1Immerz, Inc.
- Dual actuator bone conduction hearing prosthesis18 Jul 2024US 2024/0244384 A1Cochlear Limited
- Vibration sensors30 Nov 2023US 2023/0384147 A1Shenzhen Shokz Co., Ltd.
- Multifunctional sounding device5 Oct 2023US 2023/0319483 A1AAC Microtech (Changzhou) Co., Ltd.
Most cited
By later US patents
- Speakers, headphones, and kits related to vibrations in an audio system, and methods for forming same15US 8,965,028 B2Skullcandy, Inc. · 2015
- Speakers and headphones related to vibrations in an audio system, and methods for operating same15US 9,648,412 B2Skullcandy, Inc. · 2017
- Air pulse generating element and sound producing device9US 10,327,060 B2xMEMS Labs, Inc. · 2019
- Driving circuit, electro-mechanical-acoustic transducer, and portable terminal apparatus9US 7,006,641 B1Matsushita Electric Industrial Co., Ltd. · 2006
- High power low frequency transducers and method of assembly7US 8,385,580 B2Adamson Systems Engineering Inc. · 2013