F01N 2230/00
Combination of silencers and other devices
F01N2230/00 (Combination of silencers and other devices) appears on 323 US grants and 226 published applications in this corpus.
Search patents in F01N- Granted patents
- 323
- Published applications
- 226
- Assignees
- 192
- Inventors
- 741
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 3 | 0 |
| 1993 | 11 | 0 |
| 1994 | 11 | 0 |
| 1995 | 11 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 2 |
| 2002 | 1 | 6 |
| 2003 | 10 | 1 |
| 2004 | 2 | 14 |
| 2005 | 7 | 9 |
| 2006 | 4 | 19 |
| 2007 | 5 | 18 |
| 2008 | 9 | 16 |
| 2009 | 6 | 15 |
| 2010 | 12 | 9 |
| 2011 | 13 | 7 |
| 2012 | 8 | 6 |
| 2013 | 12 | 6 |
| 2014 | 5 | 12 |
| 2015 | 11 | 6 |
| 2016 | 4 | 5 |
| 2017 | 11 | 15 |
| 2018 | 5 | 9 |
| 2019 | 10 | 9 |
| 2020 | 7 | 11 |
| 2021 | 5 | 10 |
| 2022 | 11 | 6 |
| 2023 | 8 | 3 |
| 2024 | 5 | 4 |
| 2025 | 4 | 7 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Saddle-type vehicle with exhaust pipe catalyst arrangement15 Sep 2026US 12,736,004 B2Kawasaki Motors, Ltd.
- Multi-stage emission system for large displacement compression ignition non-road diesel generator systems for emergency and non-emergency stationary power applications14 Jul 2026US 12,680,488 B2Bluefin ESI, Inc.
- Convertible silencer15 Jul 2025US 12,359,594 B2Discovery Energy, LLC
- Off-road vehicle and engine thereof8 Apr 2025US 12,270,360 B2Zhejiang CFMOTO Power Co., Ltd.
- Exhaust assembly for a utility vehicle4 Feb 2025US 12,214,654 B2Polaris Industries Inc.
- Multi-stage emission system for large displacement compression ignition non-road diesel generator systems for emergency and non-emergency stationary power applications28 May 2026US 2026/0146552 A1Bluefin ESI, Inc.
- Convertible silencer25 Dec 2025US 2025/0389215 A1Discovery Energy, LLC
- Two-layer, three-way catalyst with significantly improved co conversion4 Dec 2025US 2025/0367603 A1Umicore AG & Co. KG
- Handheld work apparatus, and exhaust gas after-treatment unit for a handheld work apparatus, and exhaust muffler9 Oct 2025US 2025/0314190 A1Andreas Stihl AG & CO.KG
- Exhaust assembly for a utility vehicle17 Apr 2025US 2025/0121678 A1Polaris Industries Inc.
Most cited
By later US patents
- Muffler apparatus with filter trap and method of use96US 4,851,015 ADonaldson Company, Inc. · 1989
- Portable engine-generator set88US 4,608,946 AHonda Giken Kogyo Kabushiki Kaisha · 1986
- Narrow profile power handle for line trimmer and the like83US 4,286,675 ABeaird-Poulan Division of Emerson Electric Co. · 1981
- Silencer83US 6,312,650 B1Silentor Holding A/S · 2001
- Exhaust gas purifying apparatus built-in to a muffler for a diesel engine76US 4,916,897 AToyota Jidosha Kabushiki Kaisha · 1990