H01M 4/921
Alloys or mixtures with metallic elements
Official title: {Alloys or mixtures with metallic elements}
H01M4/921 (Alloys or mixtures with metallic elements) appears on 939 US grants and 1,411 published applications in this corpus.
Search patents in H01M- Granted patents
- 939
- Published applications
- 1,411
- Assignees
- 519
- Inventors
- 2,665
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 4 |
| 2002 | 9 | 27 |
| 2003 | 13 | 28 |
| 2004 | 20 | 75 |
| 2005 | 23 | 75 |
| 2006 | 24 | 78 |
| 2007 | 21 | 87 |
| 2008 | 30 | 78 |
| 2009 | 36 | 78 |
| 2010 | 65 | 90 |
| 2011 | 54 | 76 |
| 2012 | 52 | 69 |
| 2013 | 44 | 60 |
| 2014 | 42 | 56 |
| 2015 | 43 | 60 |
| 2016 | 46 | 45 |
| 2017 | 44 | 41 |
| 2018 | 40 | 35 |
| 2019 | 32 | 31 |
| 2020 | 32 | 39 |
| 2021 | 33 | 59 |
| 2022 | 28 | 64 |
| 2023 | 41 | 57 |
| 2024 | 34 | 42 |
| 2025 | 44 | 36 |
| 2026 | 19 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- 4H/fcc heterophase platinum based nanomaterial on nanorod for electrocatalytic alcohol oxidation8 Sep 2026US 12,731,794 B2City University of Hong Kong
- Deposition of noble metal islets or thin films for its use for electrochemical catalysts with improved catalytic activity11 Aug 2026US 12,703,913 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Catalyst for fuel cells and method for producing same4 Aug 2026US 12,700,596 B2Cataler Corporation
- Inhibition-free low-temperature engine exhaust oxidation catalyst26 May 2026US 12,636,641 B2Oregon State University
- Multi-metallic oxygen reduction reaction (orr) cu-pt-au catalyst in high-temperature proton exchange membrane fuel cells8 Oct 2026US 2026/0312076 A1Brown University
- Two-phase synthesis of pt-surface of nanostar1 Oct 2026US 2026/0295672 A1Honda Motor Co., Ltd.
- High density loading multimetallic particles on chemically modified carbon support1 Oct 2026US 2026/0302265 A1Honda Motor Co., Ltd.
- Catalyst layer for fuel cell10 Sep 2026US 2026/0269278 A1Toyota Jidosha Kabushiki Kaisha
- Electrode materials for membrane electrode assembly6 Aug 2026US 2026/0229552 A1Ecolectro, Inc
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
- Method of supplying fuel gas to a fuel cell144US 6,045,933 AHonda Giken Kogyo Kabushiki Kaisha · 2000
- Catalyst for membrane electrode assembly and method of making136US 5,879,827 AMinnesota Mining and Manufacturing Company · 1999
- Direct methanol feed fuel cell and system113US 5,773,162 ACalifornia Institute of Technology · 1998