H01M 8/04888
Of auxiliary devices
Official title: {of auxiliary devices, e.g. batteries, capacitors}
H01M8/04888 (Of auxiliary devices) appears on 122 US grants and 155 published applications in this corpus.
Search patents in H01M- Granted patents
- 122
- Published applications
- 155
- Assignees
- 75
- Inventors
- 280
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 6 |
| 2004 | 1 | 2 |
| 2005 | 2 | 6 |
| 2006 | 6 | 13 |
| 2007 | 0 | 18 |
| 2008 | 3 | 4 |
| 2009 | 4 | 9 |
| 2010 | 7 | 6 |
| 2011 | 6 | 6 |
| 2012 | 5 | 5 |
| 2013 | 6 | 2 |
| 2014 | 5 | 1 |
| 2015 | 5 | 4 |
| 2016 | 4 | 10 |
| 2017 | 4 | 7 |
| 2018 | 6 | 5 |
| 2019 | 10 | 6 |
| 2020 | 5 | 5 |
| 2021 | 3 | 6 |
| 2022 | 4 | 9 |
| 2023 | 8 | 9 |
| 2024 | 7 | 6 |
| 2025 | 6 | 4 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell power control system and method6 Oct 2026US 12,755,994 B2Hyundai Motor Cpompany
- Electrical power generating system16 Jun 2026US 12,658,711 B2BWR Innovations LLC
- Compressor and compressor control method24 Mar 2026US 12,586,801 B2Panasonic Intellectual Property Management Co., Ltd.
- Remotely controlled electrical power generating system17 Mar 2026US 12,580,388 B2BWR Innovations LLC
- Device and method for controlling fuel cell system21 Oct 2025US 12,451,501 B2Hyundai Motor Company
- Fuel cell vehicle and regenerative electrical power consumption method for fuel cell vehicle1 Oct 2026US 2026/0296225 A1Honda Motor Co., Ltd.
- Electrical Power Generating System1 Oct 2026US 2026/0302793 A1BWR Innovations LLC
- Remotely Controlled Electrical Power Generating System16 Jul 2026US 2026/0204917 A1BWR Innovations LLC
- Method of controlling opening degree of air flow rate control valve in fuel cell stack and apparatus4 Jun 2026US 2026/0155413 A1Hyundai Motor Company
- Fuel cell apparatus4 Jun 2026US 2026/0155668 A1Hyundai Motor Company
Most cited
By later US patents
- 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
- Hybrid fuel battery system and the operation method thereof97US 5,334,463 ASanyo Electric Co., Ltd. · 1994
- Fuel cell power systems, direct current voltage converters, fuel cell power generation methods, power conditioning methods and direct current power conditioning methods46US 6,428,918 B1Avista Laboratories, Inc. · 2002
- Gas shortage preventive circuit for a fuel cell power generation system45US 5,624,768 AFuji Electric Co., Ltd. · 1997