H01M 8/04671
Of the individual fuel cell
Official title: {of the individual fuel cell}
H01M8/04671 (Of the individual fuel cell) appears on 205 US grants and 285 published applications in this corpus.
Search patents in H01M- Granted patents
- 205
- Published applications
- 285
- Assignees
- 120
- Inventors
- 696
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 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 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 10 |
| 2004 | 4 | 9 |
| 2005 | 3 | 6 |
| 2006 | 2 | 8 |
| 2007 | 3 | 5 |
| 2008 | 4 | 7 |
| 2009 | 3 | 7 |
| 2010 | 6 | 11 |
| 2011 | 6 | 17 |
| 2012 | 6 | 11 |
| 2013 | 10 | 9 |
| 2014 | 6 | 11 |
| 2015 | 16 | 17 |
| 2016 | 8 | 8 |
| 2017 | 9 | 11 |
| 2018 | 11 | 13 |
| 2019 | 11 | 16 |
| 2020 | 12 | 13 |
| 2021 | 16 | 14 |
| 2022 | 11 | 13 |
| 2023 | 19 | 20 |
| 2024 | 9 | 20 |
| 2025 | 13 | 15 |
| 2026 | 7 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Performance testing device applicable to metal fuel cell16 Jun 2026US 12,658,460 B2Beijing Institute of Technology
- Fuel cell array and fuel cell inspection method2 Jun 2026US 12,646,734 B2Hitachi High-Tech Corporation
- Fuel cell system26 May 2026US 12,636,973 B2Honda Motor Co., Ltd.
- Method of monitoring and replacing fuel cell stacks within a fuel cell stack assembly24 Feb 2026US 12,562,392 B2Robert Bosch GmbH
- Method of analyzing a functional layer of an electrochemical cell or an electrochemical sensor application3 Feb 2026US 12,540,932 B2Greenerity GmbH
- Control method for fuel cell system17 Sep 2026US 2026/0279861 A1Kabushiki Kaisha Toyota Chuo Kenkyusho
- Voltage monitoring arrangement for an electric cell stack, particularly for a fuel cell stack27 Aug 2026US 2026/0251719 A1Powercell Sweden AB
- Fuel cell system6 Aug 2026US 2026/0229561 A1Toyota Jidosha Kabushiki Kaisha
- Voltage detection system23 Jul 2026US 2026/0211009 A1Toyota Jidosha Kabushiki Kaisha
- Malfunction detection and deterioration estimation device16 Jul 2026US 2026/0204605 A1Denso Corporation
Most cited
By later US patents
- Method and apparatus for monitoring fuel cell performance359US 5,170,124 AMinister of National Defence of Her Majesty's Canadian Government · 1992
- Automatic voltage imbalance detector205US 4,424,491 AThe United States of America as represented by the United States Department of Energy · 1984
- PEM fuel cell monitoring system167US 5,763,113 AGeneral Motors Corporation · 1998
- Fuel cell and method for controlling same103US 6,096,449 AAvista Labs · 2000
- Fuel cell anomaly detection method and apparatus34US 6,953,630 B2Ballard Power Systems Inc. · 2005