H01M 8/04776
At auxiliary devices
Official title: {at auxiliary devices, e.g. reformer, compressor, burner}
H01M8/04776 (At auxiliary devices) appears on 528 US grants and 809 published applications in this corpus.
Search patents in H01M- Granted patents
- 528
- Published applications
- 809
- Assignees
- 233
- Inventors
- 1,494
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 24 |
| 2003 | 5 | 14 |
| 2004 | 15 | 21 |
| 2005 | 13 | 25 |
| 2006 | 4 | 37 |
| 2007 | 17 | 22 |
| 2008 | 14 | 41 |
| 2009 | 14 | 33 |
| 2010 | 10 | 43 |
| 2011 | 25 | 33 |
| 2012 | 26 | 41 |
| 2013 | 26 | 33 |
| 2014 | 29 | 24 |
| 2015 | 30 | 36 |
| 2016 | 26 | 25 |
| 2017 | 25 | 25 |
| 2018 | 23 | 32 |
| 2019 | 32 | 36 |
| 2020 | 29 | 31 |
| 2021 | 31 | 24 |
| 2022 | 28 | 39 |
| 2023 | 32 | 36 |
| 2024 | 17 | 51 |
| 2025 | 21 | 50 |
| 2026 | 16 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fuel cell charge air system and method1 Sep 2026US 12,725,819 B2Caterpillar Inc.
- Hydrogen supply device11 Aug 2026US 12,706,319 B2Toyota Jidosha Kabushiki Kaisha
- Fuel cell system4 Aug 2026US 12,700,605 B2LG Electronics Inc.
- Dehydrogenation reaction device and control method thereof7 Jul 2026US 12,676,329 B2Hyundai Motor Company
- Fuel cell system with improved humidifier8 Oct 2026US 2026/0312088 A1Plastic Omnium New Energies France
- Fuel cell system and purging method for inerting a fuel cell system8 Oct 2026US 2026/0312091 A1
- Fuel cell system and control method therefor8 Oct 2026US 2026/0312102 A1Nissan Motor Co., Ltd.
- Method for monitoring the state of a redox flow battery system1 Oct 2026US 2026/0302301 A1LIVA Power Management Systems GmbH
- Humidification system and fuel cell system17 Sep 2026US 2026/0279856 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Method for controlling a fuel cell141US 4,904,548 AFuji Electric Co., Ltd. · 1990
- Fuel cell power generation system138US 5,658,681 AAisin Aw Co., Ltd. · 1997
- Fuel cell system controller115US 6,495,277 B1IdaTech, LLC · 2002
- Hybrid electrical power system114US 5,968,680 AAlliedSignal Inc. · 1999
- Hybrid fuel battery system and the operation method thereof97US 5,334,463 ASanyo Electric Co., Ltd. · 1994