H01M 8/04947
Of auxiliary devices
Official title: {of auxiliary devices, e.g. batteries, capacitors}
H01M8/04947 (Of auxiliary devices) appears on 362 US grants and 514 published applications in this corpus.
Search patents in H01M- Granted patents
- 362
- Published applications
- 514
- Assignees
- 171
- Inventors
- 975
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 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 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 5 |
| 2002 | 5 | 9 |
| 2003 | 12 | 14 |
| 2004 | 7 | 31 |
| 2005 | 7 | 28 |
| 2006 | 8 | 38 |
| 2007 | 10 | 31 |
| 2008 | 7 | 30 |
| 2009 | 16 | 29 |
| 2010 | 18 | 23 |
| 2011 | 23 | 12 |
| 2012 | 21 | 13 |
| 2013 | 16 | 13 |
| 2014 | 19 | 10 |
| 2015 | 10 | 17 |
| 2016 | 4 | 11 |
| 2017 | 16 | 9 |
| 2018 | 13 | 13 |
| 2019 | 7 | 14 |
| 2020 | 14 | 17 |
| 2021 | 16 | 22 |
| 2022 | 18 | 23 |
| 2023 | 28 | 43 |
| 2024 | 17 | 26 |
| 2025 | 23 | 18 |
| 2026 | 16 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power management system6 Oct 2026US 12,756,197 B2Techwin Co., Ltd.
- Method of controlling a cooling fan for a fuel cell stack8 Sep 2026US 12,731,802 B2Hyundai Motor Company
- Hydrogen activation/ionization accelerating apparatus having fingerprint-type panel stack structure25 Aug 2026US 12,719,068 B2
- Vehicle25 Aug 2026US 12,719,072 B2Toyota Jidosha Kabushiki Kaisha
- System and method for renewable energy based EV charging and hydrogen fueling30 Jun 2026US 12,668,144 B2BWR Innovations LLC
- Fuel cell system17 Sep 2026US 2026/0279855 A1Toyota Jidosha Kabushiki Kaisha
- Integrated electrochemical energy and water generation system with closed-loop carbon conversion10 Sep 2026US 2026/0269292 A1Civis Tech Global, Corp.
- Battery pack, power tool and battery pack charger system3 Sep 2026US 2026/0261226 A1Black & Decker Inc.
- Battery and motor system for replacing internal combustion engine27 Aug 2026US 2026/0254394 A1Black & Decker Inc.
- 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
Most cited
By later US patents
- Power supply apparatus220US 6,882,131 B1Matsushita Electric Industrial Co., Ltd. · 2005
- Power supply system and electronic device196US 7,538,451 B2Sony Corporation · 2009
- Power supply apparatus with fuel cell and method of controlling the same162US 7,883,808 B2Hitachi, Ltd. · 2011
- Fuel cell system controller115US 6,495,277 B1IdaTech, LLC · 2002
- Fuel cell/battery hybrid power system for vehicle104US 5,631,532 AAisin Aw Co., Ltd. · 1997