B01D 53/9472
In different zones
Official title: {in different zones}
B01D53/9472 (In different zones) appears on 263 US grants and 322 published applications in this corpus.
Search patents in B01D- Granted patents
- 263
- Published applications
- 322
- Assignees
- 92
- Inventors
- 678
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 2 | 3 |
| 2005 | 0 | 0 |
| 2006 | 1 | 4 |
| 2007 | 1 | 4 |
| 2008 | 0 | 0 |
| 2009 | 2 | 4 |
| 2010 | 3 | 9 |
| 2011 | 3 | 14 |
| 2012 | 9 | 11 |
| 2013 | 11 | 14 |
| 2014 | 10 | 21 |
| 2015 | 16 | 18 |
| 2016 | 17 | 14 |
| 2017 | 16 | 19 |
| 2018 | 15 | 37 |
| 2019 | 18 | 29 |
| 2020 | 26 | 18 |
| 2021 | 20 | 18 |
| 2022 | 22 | 22 |
| 2023 | 14 | 26 |
| 2024 | 13 | 24 |
| 2025 | 11 | 8 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- Catalyzed soot filter with reduced ammonia oxidation1 Sep 2026US 12,723,531 B2BASF Mobile Emissions Catalysts LLC
- Composite, zoned oxidation catalyst for a compression ignition internal combustion engine25 Aug 2026US 12,714,990 B2Johnson Matthey Public Limited Company
- Exhaust gas purification catalyst device7 Apr 2026US 12,594,525 B2Cataler Corporation
- Emission control catalyst article with PGM-gradient architecture17 Mar 2026US 12,576,395 B2BASF Mobile Emissions Catalysts LLC
- Ammonia oxidation catalyst with zoned scr inlet and pgm outlet for gasoline applications23 Jul 2026US 2026/0208105 A1BASF SE
- Exhaust Gas Purification Catalyst23 Jul 2026US 2026/0208107 A1Cataler Corporation
- A copper- and and manganese-containing catalyst for the treatment of an exhaust gas stream containing one or more of formaldehyde, nitrogen oxide (no), and hydrocarbons9 Jul 2026US 2026/0192251 A1
- Exhaust Gas Purifying Catalyst and Catalyst Body using the Same7 May 2026US 2026/0124581 A1Cataler Corporation
- Selective catalytic reduction system for exhaust gas treatment, and exhaust gas purification apparatus for lean combustion engines comprising selective catalytic reduction system for exhaust gas treatment22 Jan 2026US 2026/0021449 A1N. E. Chemcat Corporation
Most cited
By later US patents
- Exhaust gas treatment system120US 6,087,298 AEngelhard Corporation · 2000
- Exhaust emission control device for a diesel engine106US 4,934,142 AToyota Jidosha Kabushiki Kaisha · 1990
- Catalytic wall-flow filter103US 6,753,294 B1Johnson Matthey Public Limited Company · 2004
- Emission control80US 6,294,141 B1Johnson Matthey Public Limited Company · 2001
- Catalyst for purifying exhaust gases from internal combustion engines and gas turbines operated at above the stoichiometric ratio72US 5,120,695 ADegusaa Aktiengesellschaft (Degussa AG) · 1992