G10K 2210/32272
Helmholtz resonators
G10K2210/32272 (Helmholtz resonators) appears on 38 US grants and 25 published applications in this corpus.
Search patents in G10K- Granted patents
- 38
- Published applications
- 25
- Assignees
- 35
- Inventors
- 100
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 3 | 0 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 1 | 5 |
| 2021 | 2 | 3 |
| 2022 | 2 | 2 |
| 2023 | 0 | 1 |
| 2024 | 2 | 0 |
| 2025 | 2 | 5 |
By publication year. Applications have been published since 2001.
Recent patents
- Loudspeaker system comprising a headrest14 Oct 2025US 12,445,765 B1Blueprint Acoustics Pty Ltd
- Acoustic wave attenuator for an electronic device11 Feb 2025US 12,223,938 B2Apple Inc.
- Sound absorber unit and wheel with sound absorber device11 Jun 2024US 12,005,733 B2CITIC Dicastal Co., Ltd.
- Broadband sound absorber based on inhomogeneous-distributed Helmholtz resonators with extended necks12 Mar 2024US 11,929,053 B2The Hong Kong University of Science and Technology
- Fairings for power generation machines13 Dec 2022US 11,527,228 B2ROLLS-ROYCE plc
- Acoustic absorption structure comprising a cellular structure and at least one partition tube which has at least two flat sides which are connected to the walls of the cellular structure24 Jul 2025US 2025/0239247 A1Airbus Operations GmbH
- Helmholtz resonator, acoustic metamaterial, acoustic absorber, sound output device and microphone26 Jun 2025US 2025/0210023 A1Sony Group Corporation
- Broadband sound absorption device using area division15 May 2025US 2025/0157448 A1Korea Advanced Institute of Science and Technology
- Acoustic wave attenuator for an electronic device15 May 2025US 2025/0157450 A1Apple Inc.
- Compressor16 Jan 2025US 2025/0020126 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Active attenuation system with on-line modeling of speaker, error path and feedback pack138US 4,677,676 ANelson Industries, Inc. · 1987
- Active sound attenation system for engine exhaust systems and the like60US 5,097,923 ANoise Cancellation Technologies, Inc. · 1992
- Method and apparatus for low frequency active attenuation58US 4,527,282 ASound Attenuators Limited · 1985
- Internal ported band pass enclosure for sound cancellation47US 5,229,556 AFord Motor Company · 1993
- Helmholtz resonator43US 6,792,907 B1Visteon Global Technologies, Inc. · 2004