H01M 8/04238
Depolarisation
Official title: {Depolarisation}
H01M8/04238 (Depolarisation) appears on 127 US grants and 180 published applications in this corpus.
Search patents in H01M- Granted patents
- 127
- Published applications
- 180
- Assignees
- 94
- Inventors
- 439
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 3 |
| 2003 | 3 | 5 |
| 2004 | 3 | 3 |
| 2005 | 1 | 6 |
| 2006 | 4 | 8 |
| 2007 | 1 | 7 |
| 2008 | 1 | 8 |
| 2009 | 3 | 17 |
| 2010 | 7 | 16 |
| 2011 | 13 | 8 |
| 2012 | 6 | 9 |
| 2013 | 7 | 6 |
| 2014 | 7 | 11 |
| 2015 | 4 | 16 |
| 2016 | 11 | 6 |
| 2017 | 7 | 7 |
| 2018 | 5 | 5 |
| 2019 | 4 | 8 |
| 2020 | 7 | 6 |
| 2021 | 7 | 4 |
| 2022 | 6 | 4 |
| 2023 | 6 | 3 |
| 2024 | 4 | 5 |
| 2025 | 3 | 5 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell regeneration14 Oct 2025US 12,444,758 B2Cummins Inc.
- Electrolyte balancing strategies for flow batteries18 Mar 2025US 12,255,368 B2Lockheed Martin Energy, LLC
- Mitigation of electric short circuit in a polymer electrolyte membrane water electrolyzer11 Feb 2025US 12,221,710 B2Electric Hydrogen Co.
- Fuel cell assembly and associated method of operation15 Oct 2024US 12,119,524 B2Intelligent Energy Limited
- System for regenerating a fuel cell and regeneration method25 Jun 2024US 12,021,282 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Method and use for conditioning fuel cells20 Aug 2026US 2026/0245930 A1Simon Fraser University
- Fuel cell hydrogen gas mitigation19 Feb 2026US 2026/0051520 A1Ford Global Technologies, LLC
- Method for restoring performance20 Nov 2025US 2025/0357513 A1LIVA Power Management Systems GmbH
- Fuel cell operating method for regenerating a cathode catalyst23 Oct 2025US 2025/0329758 A1Robert Bosch GmbH
- Method for operating a fuel cell system, and control device23 Oct 2025US 2025/0329764 A1
Most cited
By later US patents
- Fuel cell and method for controlling same103US 6,096,449 AAvista Labs · 2000
- Fuel-cells generator system and method of generating electricity from fuel cells75US 5,925,476 AToyota Jidosha Kabushiki Kaisha · 1999
- Method and apparatus for regenerating the performance of a PEM fuel cell41US 6,399,231 B1UTC Fuel Cells, LLC · 2002
- Method and apparatus for controlling a fuel cell34US 5,023,150 AFuji Electric Co., Ltd. · 1991
- System for implementing operation and start-up of a vehicle which is powered by electricity from a fuel cell power plant16US 6,210,821 B1International Fuel Cells Corporation · 2001