H01M 8/04544
Voltage
Official title: {Voltage}
H01M8/04544 (Voltage) appears on 1,512 US grants and 2,099 published applications in this corpus.
Search patents in H01M- Granted patents
- 1,512
- Published applications
- 2,099
- Assignees
- 465
- Inventors
- 3,207
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 6 |
| 2002 | 12 | 45 |
| 2003 | 20 | 54 |
| 2004 | 33 | 75 |
| 2005 | 22 | 87 |
| 2006 | 36 | 123 |
| 2007 | 38 | 113 |
| 2008 | 40 | 103 |
| 2009 | 41 | 109 |
| 2010 | 64 | 136 |
| 2011 | 76 | 97 |
| 2012 | 88 | 106 |
| 2013 | 81 | 57 |
| 2014 | 87 | 75 |
| 2015 | 84 | 78 |
| 2016 | 78 | 77 |
| 2017 | 60 | 75 |
| 2018 | 68 | 87 |
| 2019 | 84 | 82 |
| 2020 | 78 | 75 |
| 2021 | 83 | 59 |
| 2022 | 66 | 75 |
| 2023 | 72 | 97 |
| 2024 | 46 | 75 |
| 2025 | 64 | 68 |
| 2026 | 45 | 65 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for controlling a drying process of a fuel cell system6 Oct 2026US 12,755,992 B2Robert Bosch GmbH
- Humidifier leak diagnosis system and method for a fuel cell system6 Oct 2026US 12,755,993 B2Hyundai Motor Company
- Fuel cell power control system and method6 Oct 2026US 12,755,994 B2Hyundai Motor Cpompany
- Electric energy managing system and method thereof29 Sep 2026US 12,746,853 B2Industrial Technology Research Institute
- Electrical energy supply system for mobile platforms and vehicle having an electrical energy supply system1 Sep 2026US 12,725,815 B2Airbus SAS
- Conditioning method and conditioning device8 Oct 2026US 2026/0312092 A1Robert Bosch GmbH
- Fuel Cell System8 Oct 2026US 2026/0312096 A1Hyundai Motor Company
- Fuel cell activation device1 Oct 2026US 2026/0302287 A1Honda Motor Co., Ltd.
- Method for monitoring the state of a redox flow battery system1 Oct 2026US 2026/0302301 A1LIVA Power Management Systems GmbH
- Electrical Power Generating System1 Oct 2026US 2026/0302793 A1BWR Innovations LLC
Most cited
By later US patents
- Method and apparatus for monitoring fuel cell performance359US 5,170,124 AMinister of National Defence of Her Majesty's Canadian Government · 1992
- Automatic voltage imbalance detector205US 4,424,491 AThe United States of America as represented by the United States Department of Energy · 1984
- Fuel cell system and control method182US 7,064,967 B2Hitachi Home & Life Solutions, Inc. · 2006
- PEM fuel cell monitoring system167US 5,763,113 AGeneral Motors Corporation · 1998
- Power supply apparatus with fuel cell and method of controlling the same162US 7,883,808 B2Hitachi, Ltd. · 2011