F01N 3/101
Three-way catalysts
Official title: {Three-way catalysts}
F01N3/101 (Three-way catalysts) appears on 1,179 US grants and 1,422 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,179
- Published applications
- 1,422
- Assignees
- 230
- Inventors
- 2,303
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 5 |
| 2002 | 14 | 11 |
| 2003 | 9 | 19 |
| 2004 | 17 | 14 |
| 2005 | 18 | 17 |
| 2006 | 8 | 10 |
| 2007 | 11 | 18 |
| 2008 | 7 | 19 |
| 2009 | 8 | 21 |
| 2010 | 19 | 14 |
| 2011 | 8 | 41 |
| 2012 | 17 | 40 |
| 2013 | 34 | 34 |
| 2014 | 43 | 52 |
| 2015 | 39 | 55 |
| 2016 | 49 | 77 |
| 2017 | 63 | 107 |
| 2018 | 76 | 109 |
| 2019 | 96 | 106 |
| 2020 | 106 | 181 |
| 2021 | 149 | 127 |
| 2022 | 118 | 118 |
| 2023 | 101 | 84 |
| 2024 | 75 | 69 |
| 2025 | 64 | 40 |
| 2026 | 18 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust gas purification catalyst6 Oct 2026US 12,752,237 B2Cataler Corporation
- Layered tri-metallic catalytic article and method of manufacturing the catalytic article29 Sep 2026US 12,746,532 B2BASF Mobile Emissions Catalysts LLC
- Apparatus and method for lambda control of spark-ignition engines, and motor vehicle29 Sep 2026US 12,747,711 B2Schaeffler Technologies AG & Co. KG
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- Three-way conversion catalyst composition comprising platinum-rhodium bimetallic components11 Aug 2026US 12,702,968 B2BASF Mobile Emissions Catalysts LLC
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Improved hydrocarbon trap for cold-start hydrocarbon control from internal combustion engines1 Oct 2026US 2026/0295527 A1
- An exhaust gas treatment system for treating an exhaust gas stream exiting a gasoline engine1 Oct 2026US 2026/0295528 A1
- Composite of manganese-based oxide and zeolite useful as nh3-scr catalyst24 Sep 2026US 2026/0284594 A1
- Catalyst article for treating exhaust gas, its method of manufacture and uses thereof10 Sep 2026US 2026/0264015 A1Johnson Matthey Public Limited Company
Most cited
By later US patents
- Exhaust purification device of internal combustion engine199US 5,473,887 AToyota Jidosha Kabushiki Kaisha · 1995
- Layered catalyst composite162US 5,597,771 AEngelhard Corporation · 1997
- Exhaust gas purification device for an internal combustion engine114US 6,109,024 AToyota Jidosha Kabushiki Kaisha · 2000
- Catalyst monitor based on a thermal power model110US 5,626,014 AFord Motor Company · 1997
- Engine system and method with cylinder deactivation106US 6,978,204 B2Ford Global Technologies, LLC · 2005