B01D 2255/102
Platinum group metals
B01D2255/102 (Platinum group metals) appears on 2,301 US grants and 2,992 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,301
- Published applications
- 2,992
- Assignees
- 723
- Inventors
- 4,517
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 11 | 0 |
| 1997 | 12 | 0 |
| 1998 | 24 | 0 |
| 1999 | 31 | 0 |
| 2000 | 40 | 0 |
| 2001 | 24 | 14 |
| 2002 | 26 | 24 |
| 2003 | 22 | 35 |
| 2004 | 22 | 34 |
| 2005 | 21 | 36 |
| 2006 | 18 | 64 |
| 2007 | 21 | 76 |
| 2008 | 25 | 78 |
| 2009 | 36 | 164 |
| 2010 | 88 | 184 |
| 2011 | 78 | 144 |
| 2012 | 98 | 129 |
| 2013 | 128 | 116 |
| 2014 | 128 | 151 |
| 2015 | 133 | 162 |
| 2016 | 123 | 154 |
| 2017 | 144 | 174 |
| 2018 | 132 | 187 |
| 2019 | 140 | 169 |
| 2020 | 132 | 155 |
| 2021 | 124 | 134 |
| 2022 | 106 | 151 |
| 2023 | 113 | 156 |
| 2024 | 85 | 149 |
| 2025 | 89 | 78 |
| 2026 | 53 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- System for treating an exhaust gas8 Oct 2026US 2026/0307052 A1Johnson Matthey Public Limited Company
- 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
- An exhaust gas treatment system for treating an exhaust gas stream exiting a gasoline engine1 Oct 2026US 2026/0295528 A1
Most cited
By later US patents
- Exhaust gas purification device for an internal combustion engine197US 5,974,791 AToyota Jidosha Kabushiki Kaisha · 1999
- NOx decreasing apparatus for an internal combustion engine153US 5,412,946 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1995
- 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
- Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof119US 6,105,365 AEngelhard Corporation · 2000