F02M 35/125
By using active elements
Official title: {by using active elements, e.g. speakers}
F02M35/125 (By using active elements) appears on 36 US grants and 32 published applications in this corpus.
Search patents in F02M- Granted patents
- 36
- Published applications
- 32
- Assignees
- 28
- Inventors
- 72
- Latest grant
- 16 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 6 |
| 2002 | 1 | 8 |
| 2003 | 3 | 2 |
| 2004 | 3 | 0 |
| 2005 | 2 | 0 |
| 2006 | 4 | 2 |
| 2007 | 1 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 3 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Device increasing engine efficiency and reducing exhaust and noise16 Jul 2024US 12,037,931 B2
- Sound attenuation device and method31 Dec 2019US 10,522,128 B2Centre National De La Recherche Scientif
- Adjustable sound distribution system and a vehicle5 Feb 2019US 10,197,022 B2GM Global Technology Operations LLC
- Mapped sound generator30 Aug 2016US 9,429,116 B2McLaren Automotive Limited
- Sound generator for an anti-noise system for influencing exhaust noises and/or intake noises of a motor vehicle21 Jun 2016US 9,374,632 B2Eberspächer Exhaust Technology GmbH & Co. KG
- A device increasing engine efficiency and reducing exhaust and noise18 Apr 2024US 2024/0125261 A1
- Adjustable sound distribution system and a vehicle14 Jun 2018US 2018/0163676 A1GM Global Technology Operations LLC
- Sound attenuation device and method31 Aug 2017US 2017/0249933 A1Centre National De La Recherche Scientifique
- Sound generator for an anti-noise system for influencing exhaust noise and/or intake noise of a motor vehicle22 Jan 2015US 2015/0020762 A1Eberspächer Exhaust Technology GmbH & Co. KG
- Sound generator for an anti-noise system for influencing exhaust noises and/or intake noises of a motor vehicle13 Nov 2014US 2014/0334633 A1Eberspächer Exhaust Technology GmbH & Co. KG
Most cited
By later US patents
- Variable resonator42US 6,508,331 B1Siemens Canada Limited · 2003
- Apparatus and method for actively reducing noise in vehicular passengers compartment40US 5,850,458 AUnisia Jecs Corporation · 1998
- System and method for reducing engine noise39US 5,828,759 ASiemens Electric Limited · 1998
- Tuned Helmholtz resonator using cavity forcing34US 6,758,304 B1Siemens VDO Automotive Corporation · 2004
- Active noise cancellation stability solution34US 7,106,866 B2Siemens VDO Automotive Corporation · 2006