H01M 8/04597
Of auxiliary devices
Official title: {of auxiliary devices, e.g. batteries, capacitors}
H01M8/04597 (Of auxiliary devices) appears on 123 US grants and 163 published applications in this corpus.
Search patents in H01M- Granted patents
- 123
- Published applications
- 163
- Assignees
- 81
- Inventors
- 385
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 8 |
| 2003 | 5 | 8 |
| 2004 | 2 | 12 |
| 2005 | 7 | 11 |
| 2006 | 7 | 13 |
| 2007 | 6 | 17 |
| 2008 | 2 | 5 |
| 2009 | 5 | 9 |
| 2010 | 9 | 6 |
| 2011 | 6 | 7 |
| 2012 | 7 | 7 |
| 2013 | 4 | 3 |
| 2014 | 8 | 2 |
| 2015 | 3 | 5 |
| 2016 | 2 | 1 |
| 2017 | 2 | 5 |
| 2018 | 2 | 4 |
| 2019 | 7 | 9 |
| 2020 | 5 | 3 |
| 2021 | 3 | 3 |
| 2022 | 6 | 5 |
| 2023 | 4 | 7 |
| 2024 | 4 | 7 |
| 2025 | 5 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating a fuel cell system, and control device7 Jul 2026US 12,676,327 B2Robert Bosch GmbH
- System and method for controlling power for fuel cell3 Feb 2026US 12,542,292 B2Hyundai Motor Company
- Valve opening/closing detection device for fuel cell system and method therefor16 Dec 2025US 12,500,254 B2Hyundai Motor Company
- Systems and methods for providing heat control in a multi-stack fuel cell system11 Nov 2025US 12,469,860 B2Intelligent Energy Limited
- Power net system for fuel cells and method for controlling the same29 Jul 2025US 12,374,707 B2Hyundai Motor Company
- Detection method for detecting a state of a fuel cell system8 Oct 2026US 2026/0312095 A1
- Method for operating a fuel cell system, and a control device18 Jun 2026US 2026/0171441 A1Robert Bosch GmbH
- Method for operating a fuel cell system, and a control device11 Jun 2026US 2026/0163029 A1
- Systems and methods for providing heat control in a multi-stack fuel cell system14 Aug 2025US 2025/0260026 A1Intelligent Energy Limited
- Method for operating a fuel cell system, and control device27 Mar 2025US 2025/0105319 A1Robert Bosch GmbH
Most cited
By later US patents
- Power supply apparatus with fuel cell and method of controlling the same162US 7,883,808 B2Hitachi, Ltd. · 2011
- Off-board station and an electricity exchanging system suitable for use with a mobile vehicle power system114US 6,380,637 B1Ztek Corporation · 2002
- Hybrid fuel battery system and the operation method thereof97US 5,334,463 ASanyo Electric Co., Ltd. · 1994
- System and method for controlling the humidity level of a fuel cell92US 6,376,111 B1General Motors Corporation · 2002
- Control unit of fuel cell generating system65US 4,883,724 AFuji Electric Co., Ltd. · 1989