H01M 4/86
Inert electrodes with catalytic activity
Official title: Inert electrodes with catalytic activity, e.g. for fuel cells
H01M4/86 (Inert electrodes with catalytic activity) appears on 7,785 US grants and 10,497 published applications in this corpus.
Search patents in H01M- Granted patents
- 7,785
- Published applications
- 10,497
- Assignees
- 2,651
- Inventors
- 17,340
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 28 | 0 |
| 1978 | 43 | 0 |
| 1979 | 35 | 0 |
| 1980 | 42 | 0 |
| 1981 | 45 | 0 |
| 1982 | 37 | 0 |
| 1983 | 39 | 0 |
| 1984 | 52 | 0 |
| 1985 | 55 | 0 |
| 1986 | 31 | 0 |
| 1987 | 36 | 0 |
| 1988 | 49 | 0 |
| 1989 | 58 | 0 |
| 1990 | 52 | 0 |
| 1991 | 40 | 0 |
| 1992 | 48 | 0 |
| 1993 | 39 | 0 |
| 1994 | 53 | 0 |
| 1995 | 37 | 0 |
| 1996 | 44 | 0 |
| 1997 | 67 | 0 |
| 1998 | 65 | 0 |
| 1999 | 70 | 0 |
| 2000 | 77 | 0 |
| 2001 | 108 | 42 |
| 2002 | 116 | 213 |
| 2003 | 130 | 294 |
| 2004 | 145 | 410 |
| 2005 | 153 | 410 |
| 2006 | 170 | 421 |
| 2007 | 148 | 480 |
| 2008 | 148 | 415 |
| 2009 | 198 | 481 |
| 2010 | 298 | 531 |
| 2011 | 309 | 459 |
| 2012 | 293 | 420 |
| 2013 | 301 | 443 |
| 2014 | 298 | 454 |
| 2015 | 314 | 464 |
| 2016 | 322 | 415 |
| 2017 | 352 | 427 |
| 2018 | 331 | 458 |
| 2019 | 359 | 423 |
| 2020 | 378 | 450 |
| 2021 | 312 | 451 |
| 2022 | 355 | 446 |
| 2023 | 327 | 451 |
| 2024 | 307 | 431 |
| 2025 | 277 | 344 |
| 2026 | 160 | 264 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01M 4/90Selection of catalytic material4,810
- H01M 4/88Processes of manufacture2,963
- H01M 4/8605Porous electrodes2,448
- H01M 4/8647Consisting of more than one material1,236
- H01M 4/96Carbon-based electrodes1,160
- H01M 2004/8678Characterised by the polarityIndexing code989
- H01M 4/8663Selection of inactive substances as ingredients for catalytic active masses782
- H01M 4/8636With a gradient in another property than porosity205
All 10 subgroupsShow fewer
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Most cited
By later US patents
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