B01D 2255/903
Multi-zoned catalysts
B01D2255/903 (Multi-zoned catalysts) appears on 367 US grants and 528 published applications in this corpus.
Search patents in B01D- Granted patents
- 367
- Published applications
- 528
- Assignees
- 92
- Inventors
- 833
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 5 |
| 2011 | 1 | 17 |
| 2012 | 9 | 14 |
| 2013 | 8 | 14 |
| 2014 | 12 | 21 |
| 2015 | 13 | 27 |
| 2016 | 17 | 41 |
| 2017 | 36 | 37 |
| 2018 | 25 | 61 |
| 2019 | 39 | 51 |
| 2020 | 44 | 35 |
| 2021 | 36 | 33 |
| 2022 | 33 | 39 |
| 2023 | 31 | 48 |
| 2024 | 19 | 36 |
| 2025 | 25 | 21 |
| 2026 | 13 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- Composite, zoned oxidation catalyst for a compression ignition internal combustion engine25 Aug 2026US 12,714,990 B2Johnson Matthey Public Limited Company
- Performance enhancement of a platinum-containing catalyst via exhaust gas hydrogen enrichment16 Jun 2026US 12,654,160 B2BASF Mobile Emissions Catalysts LLC
- Gas treatment system, semiconductor process system including the same, and gas treatment method using the same26 May 2026US 12,636,612 B2Samsung Electronics Co., Ltd.
- Coated filters26 May 2026US 12,637,966 B2Johnson Matthey Public Limited Company
- Gas treatment system, semiconductor process system including the same, and gas treatment method using the same10 Sep 2026US 2026/0264013 A1Samsung Electronics Co., Ltd.
- Exhaust gas purification catalyst composition, exhaust gas purification catalyst and exhaust gas purification system3 Sep 2026US 2026/0257173 A1Mitsui Mining & Smelting Co., Ltd.
- Exhaust Gas Purification Catalyst20 Aug 2026US 2026/0243188 A1Cataler Corporation
- Gpf with improved washcoat distribution13 Aug 2026US 2026/0233163 A1Umicore AG & Co. KG
- A multifunctional catalyst system30 Jul 2026US 2026/0216650 A1Dinex A/S
Most cited
By later US patents
- Multi-zoned catalytic trap and methods of making and using the same88US 6,375,910 B1Engelhard Corporation · 2002
- SCR on low thermal mass filter substrates45US 7,998,423 B2BASF SE · 2011
- Gasoline engine emissions treatment systems having particulate filters32US 8,815,189 B2BASF SE · 2014
- Integrated SCR and AMOx catalyst systems28US 8,293,182 B2BASF SE · 2012
- Diesel oxidation catalyst and use thereof in diesel and advanced combustion diesel engine systems26US 9,440,192 B2BASF SE · 2016