B01J 23/56
Platinum group metals
B01J23/56 (Platinum group metals) appears on 4,139 US grants and 4,083 published applications in this corpus.
Search patents in B01J- Granted patents
- 4,139
- Published applications
- 4,083
- Assignees
- 1,236
- Inventors
- 8,348
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 86 | 0 |
| 1977 | 66 | 0 |
| 1978 | 51 | 0 |
| 1979 | 50 | 0 |
| 1980 | 60 | 0 |
| 1981 | 44 | 0 |
| 1982 | 44 | 0 |
| 1983 | 29 | 0 |
| 1984 | 42 | 0 |
| 1985 | 61 | 0 |
| 1986 | 40 | 0 |
| 1987 | 36 | 0 |
| 1988 | 33 | 0 |
| 1989 | 28 | 0 |
| 1990 | 44 | 0 |
| 1991 | 52 | 0 |
| 1992 | 36 | 0 |
| 1993 | 51 | 0 |
| 1994 | 38 | 0 |
| 1995 | 37 | 0 |
| 1996 | 39 | 0 |
| 1997 | 38 | 0 |
| 1998 | 56 | 0 |
| 1999 | 78 | 0 |
| 2000 | 81 | 0 |
| 2001 | 62 | 39 |
| 2002 | 83 | 95 |
| 2003 | 88 | 144 |
| 2004 | 77 | 177 |
| 2005 | 72 | 148 |
| 2006 | 75 | 136 |
| 2007 | 90 | 176 |
| 2008 | 81 | 154 |
| 2009 | 105 | 209 |
| 2010 | 143 | 198 |
| 2011 | 126 | 170 |
| 2012 | 118 | 158 |
| 2013 | 143 | 182 |
| 2014 | 147 | 174 |
| 2015 | 161 | 181 |
| 2016 | 150 | 161 |
| 2017 | 157 | 170 |
| 2018 | 119 | 173 |
| 2019 | 133 | 153 |
| 2020 | 149 | 187 |
| 2021 | 134 | 158 |
| 2022 | 121 | 182 |
| 2023 | 105 | 174 |
| 2024 | 110 | 178 |
| 2025 | 110 | 116 |
| 2026 | 60 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01J 23/63With rare earths or actinides1,745
- B01J 23/64With arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese1,427
- B01J 23/58With alkali- or alkaline earth metals867
- B01J 23/62With gallium, indium, thallium, germanium, tin or lead704
- B01J 23/60With zinc, cadmium or mercury250
Recent patents
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- Exhaust gas purification catalyst6 Oct 2026US 12,752,237 B2Cataler Corporation
- Catalyst compositions and processes for making and using same6 Oct 2026US 12,752,258 B2ExxonMobil Chemical Patents Inc.
- Multi-layer TWC formulations with optimalized PGM loadings29 Sep 2026US 12,746,510 B2Johnson Matthey Public Limited Company
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Intermetallic catalyst complex for electrochemical device and method of manufacturing same8 Oct 2026US 2026/0307054 A1Hyundai Motor Company
- Tri-metallic catalyst for ammonia cracking, preparation method therefor, and production method for hydrogen using same24 Sep 2026US 2026/0284640 A1Heesung Catalysts Corporation
- Catalysts suitable for making light olefins by dehydrogenation that include chromium24 Sep 2026US 2026/0284641 A1Dow Global Technologies LLC
- Methods for making light olefins by dehydrogenation using catalysts that include manganese17 Sep 2026US 2026/0274771 A1Dow Global Technologies LLC
Most cited
By later US patents
- Aiming beam system for optical data reading device237US 5,296,689 ASpectra-Physics Scanning Systems, Inc. · 1994
- System and method for networked loyalty program176US 7,398,225 B2American Express Travel Related Services Company, Inc. · 2008
- Catalysts for hydrogenation of carboxylic acid168US 6,495,730 B1Asahi Kasei Kabushiki Kaisha · 2002
- Direct and selective production of ethanol from acetic acid utilizing a platinum/tin catalyst166US 7,863,489 B2Celanese International Corporation · 2011
- Layered catalyst composite162US 5,597,771 AEngelhard Corporation · 1997