B01D 2255/90
Physical characteristics of catalysts
B01D2255/90 (Physical characteristics of catalysts) appears on 2,653 US grants and 3,528 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,653
- Published applications
- 3,528
- Assignees
- 738
- Inventors
- 4,970
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 11 | 0 |
| 1998 | 20 | 0 |
| 1999 | 25 | 0 |
| 2000 | 29 | 0 |
| 2001 | 22 | 9 |
| 2002 | 24 | 20 |
| 2003 | 11 | 21 |
| 2004 | 20 | 20 |
| 2005 | 15 | 30 |
| 2006 | 12 | 48 |
| 2007 | 18 | 56 |
| 2008 | 13 | 84 |
| 2009 | 29 | 144 |
| 2010 | 74 | 175 |
| 2011 | 62 | 158 |
| 2012 | 124 | 157 |
| 2013 | 139 | 125 |
| 2014 | 132 | 195 |
| 2015 | 128 | 211 |
| 2016 | 164 | 184 |
| 2017 | 163 | 234 |
| 2018 | 152 | 265 |
| 2019 | 208 | 207 |
| 2020 | 177 | 216 |
| 2021 | 176 | 211 |
| 2022 | 178 | 229 |
| 2023 | 172 | 201 |
| 2024 | 115 | 156 |
| 2025 | 118 | 88 |
| 2026 | 63 | 84 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2255/92DimensionsIndexing code934
- B01D 2255/902Multilayered catalystIndexing code746
- B01D 2255/915Catalyst supported on particulate filtersIndexing code721
- B01D 2255/908O2-storage component incorporated in the catalystIndexing code513
- B01D 2255/91Nox-storage component incorporated in the catalystIndexing code424
- B01D 2255/903Multi-zoned catalystsIndexing code367
- B01D 2255/904Multiple catalystsIndexing code223
- B01D 2255/912Hc-storage component incorporated in the catalystIndexing code150
All 12 subgroupsShow fewer
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
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- Method for manufacturing exhaust gas purification catalyst29 Sep 2026US 12,746,538 B2Cataler Corporation
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Catalytic article comprising vanadium-containing catalyst and oxidation catalyst8 Oct 2026US 2026/0307065 A1
- Honeycomb structure and honeycomb filter1 Oct 2026US 2026/0295525 A1NGK Insulators, Ltd.
- Improved hydrocarbon trap for cold-start hydrocarbon control from internal combustion engines1 Oct 2026US 2026/0295527 A1
- Pillar-shaped honeycomb structure1 Oct 2026US 2026/0295572 A1NGK Insulators, Ltd.
Most cited
By later US patents
- Layered catalyst composite162US 5,597,771 AEngelhard Corporation · 1997
- Catalyst composition containing segregated platinum and rhodium components151US 5,057,483 AEngelhard Corporation · 1991
- Method and apparatus for emission control148US 6,314,722 B1Matros Technologies, Inc. · 2001
- Catalyzed SCR filter and emission treatment system132US 7,229,597 B2BASFD Catalysts LLC · 2007
- Monomodal and polymodal catalyst supports and catalysts having narrow pore size distributions and their production129US 5,935,897 ABASF SE · 1999