H01M 8/04917
Of auxiliary devices
Official title: {of auxiliary devices, e.g. batteries, capacitors}
H01M8/04917 (Of auxiliary devices) appears on 78 US grants and 125 published applications in this corpus.
Search patents in H01M- Granted patents
- 78
- Published applications
- 125
- Assignees
- 73
- Inventors
- 267
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 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 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 2 |
| 2003 | 4 | 4 |
| 2004 | 2 | 7 |
| 2005 | 3 | 11 |
| 2006 | 5 | 22 |
| 2007 | 1 | 7 |
| 2008 | 4 | 6 |
| 2009 | 5 | 5 |
| 2010 | 5 | 5 |
| 2011 | 1 | 5 |
| 2012 | 2 | 1 |
| 2013 | 3 | 4 |
| 2014 | 2 | 2 |
| 2015 | 2 | 5 |
| 2016 | 6 | 4 |
| 2017 | 2 | 3 |
| 2018 | 2 | 3 |
| 2019 | 3 | 6 |
| 2020 | 4 | 3 |
| 2021 | 1 | 4 |
| 2022 | 6 | 1 |
| 2023 | 5 | 3 |
| 2024 | 0 | 7 |
| 2025 | 3 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for using fuel cell system air throttle to control hybrid power system10 Mar 2026US 12,573,650 B2Nimbus Power Systems, Inc.
- Device and method for controlling fuel cell system21 Oct 2025US 12,451,501 B2Hyundai Motor Company
- Apparatus for converting power of fuel cell for power generation and method thereof7 Oct 2025US 12,438,167 B2Hyundai Motor Company
- Method and apparatus for driving fuel cell-based vehicle20 May 2025US 12,304,332 B2Hyundai Motor Company
- Fuel cell system air throttle for hybrid power control26 Dec 2023US 11,855,322 B1Nimbus Power Systems, Inc.
- Fuel cell system and method for controlling a heating current for temperature control of a fuel cell stack of a fuel cell system16 Apr 2026US 2026/0106193 A1Robert Bosch GmbH
- Method for operating and/or fueling a compressed gas supply system and electronic device5 Feb 2026US 2026/0036260 A1Robert Bosch GmbH
- Variable Current Load System and Control Method16 Oct 2025US 2025/0320099 A1Infintium Fuel Cell Systems, Inc.
- Power source assembly for an aeronautical vehicle13 Mar 2025US 2025/0083572 A1GE Marmara Technology Center Muhendislik Hizmetleri Ltd
- Compressor system for a fuel cell system12 Dec 2024US 2024/0413364 A1ZF Friedrichshafen AG
Most cited
By later US patents
- Hybrid fuel battery system and the operation method thereof97US 5,334,463 ASanyo Electric Co., Ltd. · 1994
- Uninterruptible power supplies using fuel cells62US 6,602,627 B2Alpha Technologies Inc. · 2003
- Efficient load-following power generating system61US 6,555,989 B1Ballard Power Systems Inc. · 2003
- Fuel-cells system, electric vehicle with fuel-cells system, and method of controlling supply of electric power59US 5,929,594 AToyota Jidosha Kabushiki Kaisha · 1999
- Fuel cell power generating apparatus and method for controlling the apparatus49US 4,988,283 AFuji Electric Co., Ltd. · 1991