H04R 3/06
Of electrostatic transducers
Official title: of electrostatic transducers
H04R3/06 (Of electrostatic transducers) appears on 182 US grants and 195 published applications in this corpus.
Search patents in H04R- Granted patents
- 182
- Published applications
- 195
- Assignees
- 94
- Inventors
- 358
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 3 |
| 2010 | 0 | 2 |
| 2011 | 3 | 3 |
| 2012 | 2 | 3 |
| 2013 | 3 | 8 |
| 2014 | 6 | 4 |
| 2015 | 6 | 5 |
| 2016 | 7 | 14 |
| 2017 | 19 | 23 |
| 2018 | 15 | 21 |
| 2019 | 25 | 19 |
| 2020 | 19 | 11 |
| 2021 | 8 | 12 |
| 2022 | 15 | 17 |
| 2023 | 9 | 17 |
| 2024 | 17 | 11 |
| 2025 | 10 | 7 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filtering architecture with minimized transients11 Aug 2026US 12,707,199 B2Infineon Technologies AG
- Electret microphone4 Aug 2026US 12,701,367 B2Sennheiser electronic GmbH & Co. KG
- Micro-speaker with integrated microphone and system9 Jun 2026US 12,652,500 B1Vibrant Microsystems Inc.
- Simultaneous dual use of an acoustic device as a loudspeaker and microphone12 May 2026US 12,627,933 B2Waves Audio Ltd.
- Detecting or predicting system faults in cooling systems in a non-intrusive manner using deep learning31 Mar 2026US 12,591,230 B2Board of Trustees of the University of Arkansas
- Micro-speaker with integrated microphone and system1 Oct 2026US 2026/0304044 A1Vibrant Microsystems Inc.
- Filtering architecture with minimized transients17 Sep 2026US 2026/0281617 A1Infineon Technologies AG
- Acoustic devices with residual stress compensation3 Sep 2026US 2026/0261805 A1Skyworks Solutions, Inc.
- Self-adaptive mems loudspeaker driving circuit2 Jul 2026US 2026/0189855 A1
- Simultaneous dual use of an acoustic device as a loudspeaker and microphone25 Jun 2026US 2026/0181334 A1Waves Audio Ltd.
Most cited
By later US patents
- Microphone assembly with P-type preamplifier input stage83US 8,259,963 B2Sonion A/S · 2012
- Electret microphone33US 3,944,756 AElectro-Voice, Incorporated · 1976
- Adjusting resonant frequencies based on feedback networks26US 10,001,391 B1Vesper Technologies Inc. · 2018
- Wide frequency band micromachined capacitive microphone/hydrophone and method24US 6,493,288 B2The Board of Trustees of the Leland Stanford Junior University · 2002
- Step-up circuit for driving full-range-element electrostatic loudspeakers20US 4,323,736 A1982