F02M 35/1261
Helmholtz resonators
Official title: {Helmholtz resonators}
F02M35/1261 (Helmholtz resonators) appears on 97 US grants and 91 published applications in this corpus.
Search patents in F02M- Granted patents
- 97
- Published applications
- 91
- Assignees
- 74
- Inventors
- 229
- Latest grant
- 20 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 7 |
| 2003 | 5 | 4 |
| 2004 | 5 | 3 |
| 2005 | 2 | 5 |
| 2006 | 4 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 4 |
| 2009 | 5 | 7 |
| 2010 | 3 | 1 |
| 2011 | 2 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 7 |
| 2014 | 6 | 5 |
| 2015 | 5 | 5 |
| 2016 | 4 | 9 |
| 2017 | 5 | 2 |
| 2018 | 3 | 11 |
| 2019 | 7 | 3 |
| 2020 | 3 | 3 |
| 2021 | 5 | 2 |
| 2022 | 5 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 2 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Turbocharger air intake silencer with adjustable cavity space structure20 Feb 2024US 11,905,916 B1Harbin Engineering University
- Air intake plenum for attenuating sound from a marine engine7 Mar 2023US 11,598,269 B1Brunswick Corporation
- Resonator20 Sep 2022US 11,448,172 B2HS R & A Co., Ltd.
- Broad-band resonance silencer, in particular for a motor vehicle engine6 Sep 2022US 11,434,855 B2Montaplast GmbH
- Turbocharger system including acoustic damper for attenuating aerodynamically generated noise from compressor19 Jul 2022US 11,391,252 B2Garrett Transportation I Inc.
- Resonator-integrated duct and method for manufacturing resonator- integrated duct4 Jun 2026US 2026/0153068 A1Isuzu Motors Limited
- Magneto-rheological device for noise vibration & harshness19 Feb 2026US 2026/0051312 A1Huawei Digital Power Technologies Co., Ltd.
- Forklift noise reduction device and method of reducing noise22 Jan 2026US 2026/0024517 A1Doosan Bobcat Korea Co., Ltd.
- Resonator for vehicle25 Dec 2025US 2025/0389243 A1HS R & A Co., Ltd.
- Air induction system for an internal combustion engine23 Jan 2025US 2025/0027469 A1Fca US LLC
Most cited
By later US patents
- Integrated resonator and filter apparatus295US 5,792,247 ADonaldson Company, Inc. · 1998
- Integrated resonator and filter apparatus107US 6,048,386 ADonaldson Company, Inc. · 2000
- Combined air cleaner-resonator94US 5,865,863 ASiemens Electric Limited · 1999
- Noise attenuator for an induction system or an exhaust system55US 6,009,705 ATennex Europe Limited · 2000
- Sound absorption structure48US 5,783,780 ANissan Motor Co., Ltd. · 1998