H01M 8/04425
At auxiliary devices
Official title: {at auxiliary devices, e.g. reformers, compressors, burners}
H01M8/04425 (At auxiliary devices) appears on 292 US grants and 440 published applications in this corpus.
Search patents in H01M- Granted patents
- 292
- Published applications
- 440
- Assignees
- 162
- Inventors
- 867
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 9 |
| 2003 | 1 | 6 |
| 2004 | 9 | 12 |
| 2005 | 7 | 21 |
| 2006 | 3 | 15 |
| 2007 | 6 | 24 |
| 2008 | 8 | 22 |
| 2009 | 4 | 15 |
| 2010 | 10 | 25 |
| 2011 | 14 | 12 |
| 2012 | 14 | 16 |
| 2013 | 15 | 18 |
| 2014 | 15 | 20 |
| 2015 | 25 | 14 |
| 2016 | 7 | 13 |
| 2017 | 10 | 15 |
| 2018 | 14 | 21 |
| 2019 | 20 | 21 |
| 2020 | 11 | 24 |
| 2021 | 25 | 7 |
| 2022 | 17 | 26 |
| 2023 | 17 | 26 |
| 2024 | 10 | 18 |
| 2025 | 13 | 26 |
| 2026 | 7 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas supply system15 Sep 2026US 12,738,517 B2Toyota Jidosha Kabushiki Kaisha
- Dehydrogenation reaction device and control method thereof7 Jul 2026US 12,676,329 B2Hyundai Motor Company
- System and method for renewable energy based EV charging and hydrogen fueling30 Jun 2026US 12,668,144 B2BWR Innovations LLC
- Fuel cell system with a ventilation line and/or a compressor ventilation line, method for ventilating a housing of a fuel cell system and vehicle21 Apr 2026US 12,609,333 B2Robert Bosch GmbH
- Fuel cell system having an air compressor and a driving control method for a motor of the air compressor7 Apr 2026US 12,597,620 B2Hyundai Motor Company
- Method for operating an air system, and control unit13 Aug 2026US 2026/0237699 A1Robert Bosch GmbH
- Apparatus and method for controlling fuel cell vehicle6 Aug 2026US 2026/0225497 A1Hyundai Motor Company
- Method for detecting a malfunction, tank system, computer program product and storage means23 Jul 2026US 2026/0213233 A1Robert Bosch GmbH
- Fuel cell16 Jul 2026US 2026/0204609 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Gas supply system25 Jun 2026US 2026/0179982 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Fuel cell power generation system138US 5,658,681 AAisin Aw Co., Ltd. · 1997
- Fuel cell system controller115US 6,495,277 B1IdaTech, LLC · 2002
- Electrochemical load management system for transportation applications86US 5,346,778 AEnergy Partners, Inc. · 1994
- Electrochemical engine60US 6,195,999 B1General Motors Corporation · 2001
- Fuel cell power plant fuel control58US 5,009,967 AInternational Fuel Cells Corporation · 1991