B01J 37/0228
In several steps
Official title: {in several steps}
B01J37/0228 (In several steps) appears on 237 US grants and 381 published applications in this corpus.
Search patents in B01J- Granted patents
- 237
- Published applications
- 381
- Assignees
- 207
- Inventors
- 1,133
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 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 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 5 | 6 |
| 2004 | 0 | 4 |
| 2005 | 3 | 3 |
| 2006 | 3 | 5 |
| 2007 | 2 | 3 |
| 2008 | 2 | 4 |
| 2009 | 5 | 7 |
| 2010 | 3 | 2 |
| 2011 | 1 | 9 |
| 2012 | 5 | 9 |
| 2013 | 3 | 8 |
| 2014 | 6 | 9 |
| 2015 | 7 | 17 |
| 2016 | 12 | 21 |
| 2017 | 15 | 15 |
| 2018 | 9 | 13 |
| 2019 | 10 | 30 |
| 2020 | 14 | 28 |
| 2021 | 26 | 34 |
| 2022 | 21 | 24 |
| 2023 | 26 | 49 |
| 2024 | 26 | 41 |
| 2025 | 17 | 24 |
| 2026 | 13 | 15 |
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
- Selective catalytic reduction catalyst for the treatment of an exhaust gas8 Sep 2026US 12,728,409 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
- Method of preparing electrocatalysts for converting carbon dioxide to chemicals4 Aug 2026US 12,697,606 B2Board of Trustees of Northern Illinois University
- Performance enhancement of a platinum-containing catalyst via exhaust gas hydrogen enrichment16 Jun 2026US 12,654,160 B2BASF Mobile Emissions Catalysts LLC
- Methane oxidation catalysts, methods of using thereof, and methods of making thereof10 Sep 2026US 2026/0264057 A1Yale University
- Molded catalyst and manufacturing method therefor20 Aug 2026US 2026/0241376 A1Korea Research Institute of Chemical Technology
- Gpf with improved washcoat distribution13 Aug 2026US 2026/0233163 A1Umicore AG & Co. KG
- Coating solution for preparation of reforming catalyst to which insulation support is applied, and reforming catalyst preparation method13 Aug 2026US 2026/0233200 A1Joong-Il Materials Inc.
- Catalyst for synthesizing ammonia showing high activity under low pressure and low temperature conditions and method of synthesizing ammonia using the same6 Aug 2026US 2026/0225082 A1Korea Institute of Energy Research
Most cited
By later US patents
- Engine exhaust treatment apparatus and method of use49US 6,497,851 B1Englehard Corporation · 2002
- Three-way catalytic converter using nanoparticles28US 9,156,025 B2SDCmaterials, Inc. · 2015
- Conversion of nitrogen oxides in the presence of a catalyst supported on a mesh-like structure26US 6,946,107 B2ABB Lummus Global Inc. · 2005
- Exhaust gas purifying catalyst25US 7,081,430 B2Daihatsu Motor Co., Ltd. · 2006
- Carbon monoxide conversion catalyst23US 8,828,343 B2BASF SE · 2014