H01M 8/04656
Of auxiliary devices
Official title: {of auxiliary devices, e.g. batteries, capacitors}
H01M8/04656 (Of auxiliary devices) appears on 63 US grants and 82 published applications in this corpus.
Search patents in H01M- Granted patents
- 63
- Published applications
- 82
- Assignees
- 54
- Inventors
- 194
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 4 |
| 2005 | 0 | 3 |
| 2006 | 3 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 5 |
| 2009 | 1 | 7 |
| 2010 | 4 | 3 |
| 2011 | 3 | 6 |
| 2012 | 1 | 0 |
| 2013 | 7 | 3 |
| 2014 | 3 | 2 |
| 2015 | 4 | 3 |
| 2016 | 4 | 4 |
| 2017 | 3 | 8 |
| 2018 | 3 | 4 |
| 2019 | 6 | 4 |
| 2020 | 4 | 3 |
| 2021 | 3 | 2 |
| 2022 | 4 | 1 |
| 2023 | 2 | 2 |
| 2024 | 3 | 2 |
| 2025 | 0 | 4 |
| 2026 | 1 | 3 |
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.
- System and method for indirectly monitoring an isolation resistance of one or more fuel cells10 Dec 2024US 12,166,250 B2Toyota Motor Engineering & Manufacturing North America, Inc.
- System and method for controlling cold start of fuel cell10 Sep 2024US 12,087,980 B2Hyundai Motor Company
- Systems and methods for facilitating medium voltage microgrid operation to manage critical loads13 Aug 2024US 12,062,916 B2Bloom Energy Corporation
- Fuel cell system air throttle for hybrid power control26 Dec 2023US 11,855,322 B1Nimbus Power Systems, Inc.
- Computer system and a method for controlling a fuel cell system11 Jun 2026US 2026/0163038 A1Volvo Truck Corporation
- Vehicle fuel cell wakeup to condition operational strategy30 Apr 2026US 2026/0121090 A1Fca US LLC
- Control method for fuel cell system, control program for fuel cell system, fuel cell system, and monogeneration device5 Mar 2026US 2026/0066319 A1Yanmar Holdings Co., Ltd.
- Hybrid fuel cell system and operating method thereof2 Oct 2025US 2025/0309295 A1Carrier Corporation
- Fuel cell system, vehicle, and method of measuring impedance2 Oct 2025US 2025/0309297 A1Subaru Corporation
Most cited
By later US patents
- Generator system utilizing a fuel cell62US 4,839,574 AFuji Electric Co., Ltd. · 1989
- Hybrid drive system47US 6,793,027 B1Yamaha Hatsudoki Kabushiki Kaisha · 2004
- Method and system for controlling and recovering short duration bridge power to maximize backup power38US 7,060,379 B2Proton Energy Systems, Inc. · 2006
- Fuel cell system and AC impedance measurement method17US 8,889,309 B2Toyota Jidosha Kabushiki Kaisha · 2014
- Battery state-of-charge management method15US 8,635,037 B2Nuvera Fuel Cells, LLC · 2014