H01M 4/926
On carbon or graphite
Official title: {on carbon or graphite}
H01M4/926 (On carbon or graphite) appears on 1,499 US grants and 2,194 published applications in this corpus.
Search patents in H01M- Granted patents
- 1,499
- Published applications
- 2,194
- Assignees
- 673
- Inventors
- 3,970
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 21 | 0 |
| 2000 | 13 | 0 |
| 2001 | 26 | 6 |
| 2002 | 14 | 29 |
| 2003 | 22 | 42 |
| 2004 | 20 | 100 |
| 2005 | 23 | 87 |
| 2006 | 38 | 113 |
| 2007 | 31 | 119 |
| 2008 | 35 | 110 |
| 2009 | 45 | 115 |
| 2010 | 75 | 147 |
| 2011 | 85 | 99 |
| 2012 | 84 | 97 |
| 2013 | 67 | 75 |
| 2014 | 52 | 78 |
| 2015 | 68 | 79 |
| 2016 | 63 | 73 |
| 2017 | 63 | 98 |
| 2018 | 69 | 86 |
| 2019 | 66 | 61 |
| 2020 | 68 | 72 |
| 2021 | 55 | 91 |
| 2022 | 63 | 93 |
| 2023 | 70 | 105 |
| 2024 | 59 | 78 |
| 2025 | 63 | 78 |
| 2026 | 36 | 63 |
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.
- 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
- Electrode catalyst, electrode catalyst layer using electrode catalyst, membrane-electrode assembly, and electrochemical device1 Sep 2026US 12,725,807 B2Panasonic Intellectual Property Management Co., Ltd.
- Noble metal single atom or cluster-porous molybdenum carbide/carbon nanocomposite using dynamic arrangement of noble metal atoms, method for manufacturing same, catalyst for hydrogen evolution reaction or hydrogen oxidation reaction comprising same, and electrode comprising the catalyst25 Aug 2026US 12,719,062 B2Korea Advanced Institute of Science and Technology
- Oxygen reduction catalyst and use thereof8 Oct 2026US 2026/0312077 A1Toyota Jidosha Kabushiki Kaisha
- High density loading multimetallic particles on chemically modified carbon support1 Oct 2026US 2026/0302265 A1Honda Motor Co., Ltd.
- Phenolic Coatings for Enhanced Resistance to Hydrocarbon Poisoning of Proton Exchange Membrane Fuel Cell Electrodes1 Oct 2026US 2026/0302267 A1University of Cincinnati
- Metal nanostructure and method for manufacturing the same17 Sep 2026US 2026/0273623 A1Heesung Catalysts Corporation
- Method for the manufacture of a catalyst-containing electrode layer17 Sep 2026US 2026/0279843 A1Carl Freudenberg KG
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