B01D 53/945
Characterised by a specific catalyst
Official title: {characterised by a specific catalyst}
B01D53/945 (Characterised by a specific catalyst) appears on 1,709 US grants and 1,565 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,709
- Published applications
- 1,565
- Assignees
- 438
- Inventors
- 2,766
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 15 | 0 |
| 1978 | 23 | 0 |
| 1979 | 11 | 0 |
| 1980 | 14 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 11 | 0 |
| 1984 | 8 | 0 |
| 1985 | 15 | 0 |
| 1986 | 10 | 0 |
| 1987 | 9 | 0 |
| 1988 | 16 | 0 |
| 1989 | 17 | 0 |
| 1990 | 26 | 0 |
| 1991 | 41 | 0 |
| 1992 | 29 | 0 |
| 1993 | 39 | 0 |
| 1994 | 32 | 0 |
| 1995 | 23 | 0 |
| 1996 | 29 | 0 |
| 1997 | 24 | 0 |
| 1998 | 32 | 0 |
| 1999 | 52 | 0 |
| 2000 | 46 | 0 |
| 2001 | 30 | 23 |
| 2002 | 30 | 41 |
| 2003 | 38 | 35 |
| 2004 | 38 | 42 |
| 2005 | 23 | 49 |
| 2006 | 19 | 46 |
| 2007 | 23 | 71 |
| 2008 | 30 | 66 |
| 2009 | 45 | 99 |
| 2010 | 62 | 69 |
| 2011 | 49 | 58 |
| 2012 | 45 | 62 |
| 2013 | 54 | 38 |
| 2014 | 50 | 89 |
| 2015 | 61 | 100 |
| 2016 | 73 | 77 |
| 2017 | 61 | 67 |
| 2018 | 49 | 68 |
| 2019 | 56 | 66 |
| 2020 | 60 | 67 |
| 2021 | 65 | 59 |
| 2022 | 42 | 72 |
| 2023 | 55 | 75 |
| 2024 | 41 | 59 |
| 2025 | 40 | 37 |
| 2026 | 17 | 30 |
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
- Multi-layer TWC formulations with optimalized PGM loadings29 Sep 2026US 12,746,510 B2Johnson Matthey Public Limited Company
- Layered tri-metallic catalytic article and method of manufacturing the catalytic article29 Sep 2026US 12,746,532 B2BASF Mobile Emissions Catalysts LLC
- Three-way conversion catalyst composition comprising platinum-rhodium bimetallic components11 Aug 2026US 12,702,968 B2BASF Mobile Emissions Catalysts LLC
- Automotive 3-way catalyst system containing a tail pipe catalyst4 Aug 2026US 12,697,604 B2BASF Mobile Emissions Catalysts LLC
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Catalytic article comprising vanadium-containing catalyst and oxidation catalyst8 Oct 2026US 2026/0307065 A1
- Improved hydrocarbon trap for cold-start hydrocarbon control from internal combustion engines1 Oct 2026US 2026/0295527 A1
- Catalyst article for treating exhaust gas, its method of manufacture and uses thereof10 Sep 2026US 2026/0264015 A1Johnson Matthey Public Limited Company
- Catalyst article for treating exhaust gas, its method of manufacture and uses thereof10 Sep 2026US 2026/0264058 A1Johnson Matthey Public Limited Company
Most cited
By later US patents
- Exhaust gas purification device for an internal combustion engine197US 5,974,791 AToyota Jidosha Kabushiki Kaisha · 1999
- Layered catalyst composite162US 5,597,771 AEngelhard Corporation · 1997
- Low emission, diesel-cycle engine158US 6,470,682 B2The United States of America as represented by the Administrator of the United States Environmental Protection Agency · 2002
- Catalyst compositions and the method of manufacturing them156US 4,171,288 AEngelhard Minerals & Chemicals Corporation · 1979
- Catalyst composition containing segregated platinum and rhodium components151US 5,057,483 AEngelhard Corporation · 1991