H01M 4/861
With a gradient in the porosity
Official title: {with a gradient in the porosity}
H01M4/861 (With a gradient in the porosity) appears on 158 US grants and 228 published applications in this corpus.
Search patents in H01M- Granted patents
- 158
- Published applications
- 228
- Assignees
- 134
- Inventors
- 594
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 3 |
| 2004 | 3 | 9 |
| 2005 | 2 | 6 |
| 2006 | 4 | 11 |
| 2007 | 4 | 13 |
| 2008 | 3 | 4 |
| 2009 | 4 | 15 |
| 2010 | 2 | 5 |
| 2011 | 7 | 13 |
| 2012 | 6 | 8 |
| 2013 | 7 | 8 |
| 2014 | 8 | 11 |
| 2015 | 8 | 5 |
| 2016 | 6 | 10 |
| 2017 | 10 | 6 |
| 2018 | 8 | 9 |
| 2019 | 4 | 11 |
| 2020 | 17 | 13 |
| 2021 | 6 | 14 |
| 2022 | 7 | 9 |
| 2023 | 12 | 16 |
| 2024 | 20 | 17 |
| 2025 | 5 | 5 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solar hydrogen fuel cell system18 Aug 2026US 12,712,480 B1
- Electrode for membrane-electrode assembly and method of manufacturing same30 Dec 2025US 12,512,481 B2Hyundai Motor Company
- Electrode for a flow battery and production method9 Dec 2025US 12,494,493 B2Fondazione Istituto Italiano Di Tecnologia
- Cathode structure of fuel cell23 Sep 2025US 12,424,638 B2Jiangsu Horizon New Energy Technologies Co. Ltd.
- Molten carbonate direct carbon fuel cell systems and methods3 Jun 2025US 12,322,845 B2Ekona Power Inc.
- Membrane electrode assembly production6 Aug 2026US 2026/0229557 A1GM Global Technology Operations LLC
- Method of manufacturing a sintered stepped porous transport layer for an electrochemical cell2 Jul 2026US 2026/0185243 A1Robert Bosch GmbH
- Apparatus and method of manufacturing a stepped, punched porous transport layer for an electrochemical cell2 Jul 2026US 2026/0185251 A1Robert Bosch GmbH
- Carbon electrodes with spatial gradients in porosity for high-power redox flow batteries14 May 2026US 2026/0135122 A1Eindhoven University of Technology
- Electrode and electrochemical cell2 Apr 2026US 2026/0094846 A1
Most cited
By later US patents
- Hybrid thin film/thick film solid oxide fuel cell and method of manufacturing the same86US 6,677,070 B2Hewlett-Packard Development Company, L. P. · 2004
- Solid porous zinc electrodes and methods of making same55US 7,291,186 B2Teck Cominco Metals Ltd. · 2007
- Carbon foam fuel cell components48US 4,125,676 AUnited Technologies Corporation · 1978
- Hybrid thin film/thick film solid oxide fuel cell and method of manufacturing the same41US 6,896,992 B2Hewlett-Packard Development Company, L. P. · 2005
- Solid oxide fuel cell and porous electrode for use in the same40US 5,114,803 ANGK Insulators, Ltd. · 1992