H01M 8/04738
Of auxiliary devices
Official title: {of auxiliary devices, e.g. reformer, compressor, burner}
H01M8/04738 (Of auxiliary devices) appears on 227 US grants and 343 published applications in this corpus.
Search patents in H01M- Granted patents
- 227
- Published applications
- 343
- Assignees
- 156
- Inventors
- 714
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 3 |
| 2002 | 1 | 5 |
| 2003 | 4 | 4 |
| 2004 | 6 | 12 |
| 2005 | 4 | 14 |
| 2006 | 4 | 12 |
| 2007 | 6 | 10 |
| 2008 | 3 | 20 |
| 2009 | 2 | 11 |
| 2010 | 6 | 12 |
| 2011 | 7 | 17 |
| 2012 | 11 | 11 |
| 2013 | 10 | 17 |
| 2014 | 16 | 14 |
| 2015 | 9 | 16 |
| 2016 | 10 | 11 |
| 2017 | 8 | 16 |
| 2018 | 11 | 19 |
| 2019 | 14 | 13 |
| 2020 | 15 | 21 |
| 2021 | 17 | 11 |
| 2022 | 13 | 14 |
| 2023 | 18 | 30 |
| 2024 | 8 | 12 |
| 2025 | 10 | 6 |
| 2026 | 8 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Fuel cell system13 Aug 2026US 2026/0237694 A1AVL List GmbH
- Fuel Cell System of Mobility and Method for Controlling the Same16 Jul 2026US 2026/0204603 A1Hyundai Motor Company
- Vehicle fuel cell system and a corresponding method for actively cooling an energy dissipating resistor in a vehicle fuel cell system11 Jun 2026US 2026/0158927 A1Volvo Truck Corporation
- Computer system and a method for controlling a fuel cell system11 Jun 2026US 2026/0163038 A1Volvo Truck Corporation
- Stationary fuel cell system21 May 2026US 2026/0142204 A1Nissan Motor Co., Ltd.
Most cited
By later US patents
- Hydrocarbon fueled solid polymer fuel cell electric power generation system168US 5,360,679 ABallard Power Systems Inc. · 1994
- Shut-off device for fuel cell system59US 5,154,986 AYamaha Hatsudoki Kabushiki Kaisha · 1992
- Fuel-cell power generating system58US 6,183,895 B2Matsushita Electric Works, Ltd. · 2001
- Fuel cell power generating apparatus and method for controlling the apparatus49US 4,988,283 AFuji Electric Co., Ltd. · 1991
- Method and system for controlling the operation of a hydrogen generator and a fuel cell34US 6,893,755 B2Cellex Power Products, Inc. · 2005