H01M 4/92
Metals of platinum group
Official title: Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence)
H01M4/92 (Metals of platinum group) appears on 2,662 US grants and 3,880 published applications in this corpus.
Search patents in H01M- Granted patents
- 2,662
- Published applications
- 3,880
- Assignees
- 1,097
- Inventors
- 6,477
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 9 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 9 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 19 | 0 |
| 1998 | 20 | 0 |
| 1999 | 30 | 0 |
| 2000 | 27 | 0 |
| 2001 | 35 | 10 |
| 2002 | 33 | 79 |
| 2003 | 37 | 118 |
| 2004 | 51 | 184 |
| 2005 | 61 | 182 |
| 2006 | 78 | 190 |
| 2007 | 63 | 219 |
| 2008 | 69 | 182 |
| 2009 | 81 | 205 |
| 2010 | 150 | 253 |
| 2011 | 150 | 179 |
| 2012 | 133 | 173 |
| 2013 | 119 | 145 |
| 2014 | 108 | 159 |
| 2015 | 117 | 156 |
| 2016 | 125 | 147 |
| 2017 | 119 | 154 |
| 2018 | 119 | 131 |
| 2019 | 111 | 108 |
| 2020 | 117 | 123 |
| 2021 | 91 | 159 |
| 2022 | 104 | 140 |
| 2023 | 112 | 155 |
| 2024 | 94 | 115 |
| 2025 | 98 | 122 |
| 2026 | 54 | 92 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Membrane-electrode assembly capable of satisfying both of two requirements of excellent performance and high durability, and fuel cell including same6 Oct 2026US 12,755,996 B2Kolon Industries, Inc.
- Electrochemical catalyst of core-shell structure and manufacturing method thereof22 Sep 2026US 12,744,222 B2Korea Institute of Science and Technology
- Surface modified oxygen reduction electrochemical catalysts22 Sep 2026US 12,744,223 B2Toyota Jidosha Kabushiki Kaisha
- Heteroelement-doped highly graphitic porous carbon body, a catalyst including the same, and a method for producing the same15 Sep 2026US 12,738,508 B2Daegu Gyeongbuk Institute of Science and Technology
- 4H/fcc heterophase platinum based nanomaterial on nanorod for electrocatalytic alcohol oxidation8 Sep 2026US 12,731,794 B2City University of Hong Kong
- Oxygen reduction catalyst and use thereof8 Oct 2026US 2026/0307067 A1Toyota Jidosha Kabushiki Kaisha
- Oxygen evolution reaction catalyst and method for its preparation8 Oct 2026US 2026/0308786 A1Johnson Matthey Public Limited Company
- Electrochemical oxygen reduction catalyst8 Oct 2026US 2026/0312075 A1Toyota Jidosha Kabushiki Kaisha
- Multi-metallic oxygen reduction reaction (orr) cu-pt-au catalyst in high-temperature proton exchange membrane fuel cells8 Oct 2026US 2026/0312076 A1Brown University
- Oxygen reduction catalyst and use thereof8 Oct 2026US 2026/0312077 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Aqueous liquid feed organic fuel cell using solid polymer electrolyte membrane173US 5,599,638 ACalifornia Institute of Technology · 1997
- Nanowire-based membrane electrode assemblies for fuel cells164US 7,179,561 B2Nanosys, Inc. · 2007
- Electrode assembly for use in a solid polymer electrolyte fuel cell163US 4,876,115 AUnited States Department of Energy · 1989
- Fuel cell system utilizing ion exchange membranes and bipolar plates150US 4,175,165 AEngelhard Minerals & Chemicals Corporation · 1979
- Membrane catalyst layer for fuel cells147US 5,211,984 AThe Regents of the University of California · 1993