H01M 8/0234
Carbonaceous material
H01M8/0234 (Carbonaceous material) appears on 715 US grants and 1,112 published applications in this corpus.
Search patents in H01M- Granted patents
- 715
- Published applications
- 1,112
- Assignees
- 427
- Inventors
- 2,360
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 13 | 5 |
| 2002 | 11 | 45 |
| 2003 | 22 | 40 |
| 2004 | 24 | 60 |
| 2005 | 21 | 80 |
| 2006 | 17 | 74 |
| 2007 | 29 | 75 |
| 2008 | 23 | 58 |
| 2009 | 25 | 69 |
| 2010 | 34 | 63 |
| 2011 | 40 | 49 |
| 2012 | 40 | 44 |
| 2013 | 40 | 31 |
| 2014 | 33 | 47 |
| 2015 | 38 | 40 |
| 2016 | 32 | 48 |
| 2017 | 37 | 50 |
| 2018 | 31 | 38 |
| 2019 | 41 | 31 |
| 2020 | 33 | 13 |
| 2021 | 15 | 28 |
| 2022 | 23 | 30 |
| 2023 | 13 | 25 |
| 2024 | 16 | 34 |
| 2025 | 11 | 18 |
| 2026 | 5 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for the preparation of a gas diffusion layer and a gas diffusion layer obtained or obtainable by such method28 Jul 2026US 12,692,607 B2Avantium Knowledge Centre B.V.
- Separator for fuel cell with excellent corrosion resistance and conductivity and coating method therefor14 Jul 2026US 12,683,178 B2Hyundai Motor Company
- Method of manufacturing electricity generating assembly26 May 2026US 12,640,385 B2Hyundai Motor Company
- Tubular polymer electrolyte membrane fuel cell stack31 Mar 2026US 12,592,397 B2Institute for Basic Science
- Cell stack and redox flow battery31 Mar 2026US 12,592,406 B2Sumitomo Electric Industries, Ltd.
- Separator for fuel cell with excellent corrosion resistance and conductivity and coating method therefor8 Oct 2026US 2026/0312107 A1Hyundai Motor Company
- Bipolar plate for fuel cells and method for manufacturing same17 Sep 2026US 2026/0279845 A1MCD Technologies S.A R. L.
- Fuel cell separator and method for manufacturing the same17 Sep 2026US 2026/0279847 A1Toyota Jidosha Kabushiki Kaisha
- Hydrogen storage material and fuel cell containing the same17 Sep 2026US 2026/0279868 A1
- Carbon fiber sheet, gas diffusion electrode medium, fuel cell, and method for manufacturing carbon fiber sheet27 Aug 2026US 2026/0253914 A1Toray Industries, Inc.
Most cited
By later US patents
- Method for manufacturing porous structure and method for forming pattern645US 6,565,763 B1Kabushiki Kaisha Toshiba · 2003
- Aqueous liquid feed organic fuel cell using solid polymer electrolyte membrane173US 5,599,638 ACalifornia Institute of Technology · 1997
- High energy density redox flow device172US 8,722,226 B224M Technologies, Inc. · 2014
- Nanowire-based membrane electrode assemblies for fuel cells164US 7,179,561 B2Nanosys, Inc. · 2007
- Nanowire structures comprising carbon135US 7,842,432 B2Nanosys, Inc. · 2010