F01N 2230/04
Catalytic converters
F01N2230/04 (Catalytic converters) appears on 205 US grants and 156 published applications in this corpus.
Search patents in F01N- Granted patents
- 205
- Published applications
- 156
- Assignees
- 134
- Inventors
- 487
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 6 |
| 2003 | 9 | 1 |
| 2004 | 2 | 13 |
| 2005 | 6 | 7 |
| 2006 | 4 | 15 |
| 2007 | 5 | 11 |
| 2008 | 7 | 12 |
| 2009 | 4 | 11 |
| 2010 | 10 | 7 |
| 2011 | 9 | 2 |
| 2012 | 5 | 4 |
| 2013 | 9 | 1 |
| 2014 | 2 | 6 |
| 2015 | 5 | 3 |
| 2016 | 4 | 3 |
| 2017 | 8 | 9 |
| 2018 | 3 | 6 |
| 2019 | 5 | 8 |
| 2020 | 5 | 8 |
| 2021 | 4 | 8 |
| 2022 | 9 | 6 |
| 2023 | 5 | 0 |
| 2024 | 5 | 3 |
| 2025 | 1 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Saddle-type vehicle with exhaust pipe catalyst arrangement15 Sep 2026US 12,736,004 B2Kawasaki Motors, Ltd.
- Exhaust assembly for a utility vehicle4 Feb 2025US 12,214,654 B2Polaris Industries Inc.
- Exhaust gas system unit12 Nov 2024US 12,140,061 B1Tenneco Inc.
- Engine assembly for a vehicle having a hydrocarbon trap27 Aug 2024US 12,071,887 B2Brp-Rotax GmbH & Co. KG
- Method for unblocking pores in a selective catalytic reduction catalyst20 Aug 2024US 12,064,756 B2Volvo Truck Corporation
- 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.
- Exhaust system and straddled off-road traveling vehicle10 Apr 2025US 2025/0116218 A1Kawasaki Motors, Ltd.
- Saddle-type vehicle3 Apr 2025US 2025/0109703 A1Kawasaki Motors, Ltd.
- Exhaust gas system unit14 Nov 2024US 2024/0376840 A1Tenneco Inc.
Most cited
By later US patents
- Silencer83US 6,312,650 B1Silentor Holding A/S · 2001
- Catalytic converter for motorcycles73US 5,376,341 ACorning Incorporated · 1994
- Muffler and exhaust gas purifier for internal combustion engines57US 4,032,310 A1977
- Filter for gases57US 5,009,857 ASchwaebische Huettenwerke GmbH · 1991
- Muffler with catalytic converter arrangement; and method57US 5,426,269 ADonaldson Company, Inc. · 1995