H04R 2201/401
2d or 3d arrays of transducers
Official title: 2D or 3D arrays of transducers
H04R2201/401 (2d or 3d arrays of transducers) appears on 1,286 US grants and 1,430 published applications in this corpus.
Search patents in H04R- Granted patents
- 1,286
- Published applications
- 1,430
- Assignees
- 567
- Inventors
- 2,670
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 6 |
| 2003 | 1 | 8 |
| 2004 | 3 | 15 |
| 2005 | 4 | 20 |
| 2006 | 12 | 26 |
| 2007 | 10 | 22 |
| 2008 | 5 | 22 |
| 2009 | 12 | 19 |
| 2010 | 16 | 22 |
| 2011 | 14 | 24 |
| 2012 | 22 | 26 |
| 2013 | 23 | 34 |
| 2014 | 22 | 32 |
| 2015 | 33 | 33 |
| 2016 | 43 | 59 |
| 2017 | 67 | 70 |
| 2018 | 85 | 110 |
| 2019 | 110 | 113 |
| 2020 | 126 | 117 |
| 2021 | 116 | 153 |
| 2022 | 120 | 133 |
| 2023 | 138 | 133 |
| 2024 | 117 | 89 |
| 2025 | 98 | 81 |
| 2026 | 54 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Virtual loudspeakers for acoustically opaque screens15 Sep 2026US 12,739,590 B2Holoplot GmbH
- Transducer, electronic device and transducer array8 Sep 2026US 12,732,745 B2Rohm Co., Ltd.
- Multi-lobe digital microphone enabled audio capture and spatialization for generating an immersive arena based audio experience8 Sep 2026US 12,732,766 B2Shure Acquisition Holdings, Inc.
- Object tracking for autonomous vehicles using long-range acoustic beamforming combined with RGB visual data18 Aug 2026US 12,713,200 B2TORC Robotics, Inc.
- Self propelling system and reaction wheel device11 Aug 2026US 12,706,501 B2
- Acoustic imaging systems for visual diagnosis8 Oct 2026US 2026/0313307 A1Fluke Corporation
- Techniques for Using Floodlight LEDs When Imaging Sensors Have an Insufficient Level of Detail for Identifying Hand Gestures, and Mixed-Reality Systems and Methods of Using These Techniques24 Sep 2026US 2026/0292120 A1Meta Platforms Technologies, LLC
- Tire property sensor system17 Sep 2026US 2026/0276484 A1Volvo Truck Corporation
- Ambisonic microphone10 Sep 2026US 2026/0270612 A1Shure Acquisition Holdings, Inc.
- Concentric circular microphone arrays with 3d steerable beamformers10 Sep 2026US 2026/0270614 A1Northwestern Polytechnical University
Most cited
By later US patents
- Microphone actuation control system suitable for teleconference systems332US 4,658,425 AShure Brothers, Inc. · 1987
- Electronic apparatus having microphones with controllable front-side gain and rear-side gain331US 8,300,845 B2Motorola Mobility LLC · 2012
- Electroacoustical transducing313US 7,519,188 B2Bose Corporation · 2009
- Center channel rendering302US 8,620,006 B2Bose Corporation · 2013
- Sound location arrangement279US 4,741,038 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1988