H01M 8/04753
Of fuel cell reactants
Official title: {of fuel cell reactants}
H01M8/04753 (Of fuel cell reactants) appears on 2,119 US grants and 3,213 published applications in this corpus.
Search patents in H01M- Granted patents
- 2,119
- Published applications
- 3,213
- Assignees
- 569
- Inventors
- 4,233
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 9 |
| 2002 | 13 | 52 |
| 2003 | 23 | 39 |
| 2004 | 27 | 88 |
| 2005 | 33 | 84 |
| 2006 | 31 | 99 |
| 2007 | 33 | 138 |
| 2008 | 35 | 136 |
| 2009 | 40 | 155 |
| 2010 | 70 | 162 |
| 2011 | 99 | 124 |
| 2012 | 109 | 100 |
| 2013 | 97 | 105 |
| 2014 | 121 | 119 |
| 2015 | 91 | 125 |
| 2016 | 101 | 135 |
| 2017 | 91 | 124 |
| 2018 | 114 | 126 |
| 2019 | 114 | 165 |
| 2020 | 128 | 133 |
| 2021 | 150 | 137 |
| 2022 | 134 | 148 |
| 2023 | 164 | 213 |
| 2024 | 75 | 179 |
| 2025 | 106 | 163 |
| 2026 | 79 | 155 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Method and system for estimating flight time of a hydrogen fuel cell UAV29 Sep 2026US 12,746,825 B2Industrial Technology Research Institute
- System and method for controlling fuel cell29 Sep 2026US 12,749,692 B2Hyundai Motor Company
- Fuel cell system29 Sep 2026US 12,749,693 B2Toyota Jidosha Kabushiki Kaisha
- Conditioning method and conditioning device8 Oct 2026US 2026/0312092 A1Robert Bosch GmbH
- Ai driven vfd control for securing membrane in flow batteries8 Oct 2026US 2026/0312097 A1ViZn Energy Systems, Inc.
- System and method for generating electricity using pyrolysis of plastics8 Oct 2026US 2026/0312100 A1
- High-temperature fuel cell system and method of operating it1 Oct 2026US 2026/0302279 A1Cellcentric GmbH & Co. KG
- Fuel cell system1 Oct 2026US 2026/0302283 A1Toyota Jidosha Kabushiki Kaisha
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
- Hydrocarbon fueled solid polymer fuel cell electric power generation system168US 5,360,679 ABallard Power Systems Inc. · 1994
- PEM fuel cell monitoring system167US 5,763,113 AGeneral Motors Corporation · 1998
- Method for controlling a fuel cell141US 4,904,548 AFuji Electric Co., Ltd. · 1990
- Fuel cell power generation system138US 5,658,681 AAisin Aw Co., Ltd. · 1997