H01M 8/04313
Characterised by the detection or assessment of variables
Official title: characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
H01M8/04313 (Characterised by the detection or assessment of variables) appears on 4,550 US grants and 6,734 published applications in this corpus.
Search patents in H01M- Granted patents
- 4,550
- Published applications
- 6,734
- Assignees
- 1,008
- Inventors
- 7,929
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 19 | 18 |
| 2002 | 29 | 93 |
| 2003 | 50 | 106 |
| 2004 | 69 | 173 |
| 2005 | 54 | 224 |
| 2006 | 81 | 249 |
| 2007 | 84 | 262 |
| 2008 | 82 | 277 |
| 2009 | 113 | 297 |
| 2010 | 149 | 393 |
| 2011 | 193 | 279 |
| 2012 | 233 | 259 |
| 2013 | 243 | 217 |
| 2014 | 248 | 267 |
| 2015 | 218 | 261 |
| 2016 | 207 | 282 |
| 2017 | 206 | 256 |
| 2018 | 235 | 269 |
| 2019 | 250 | 303 |
| 2020 | 279 | 272 |
| 2021 | 274 | 269 |
| 2022 | 280 | 335 |
| 2023 | 306 | 418 |
| 2024 | 177 | 348 |
| 2025 | 232 | 328 |
| 2026 | 163 | 279 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fuel cell system and fuel cell vehicle6 Oct 2026US 12,752,643 B2Kabushiki Kaisha Toyota Jidoshokki
- Fuel cell vehicle with differential pressure flow meter for humidity measurement6 Oct 2026US 12,752,667 B2Ford Global Technologies, LLC
- Fuel cell vehicle and controlling method thereof6 Oct 2026US 12,752,668 B2Hyundai Motor Company
- Hybrid hydrogen fuel cell combustor power system6 Oct 2026US 12,755,989 B2Caterpillar Inc.
- Method for controlling a drying process of a fuel cell system6 Oct 2026US 12,755,992 B2Robert Bosch GmbH
- Fuel cell system and purging method for inerting a fuel cell system8 Oct 2026US 2026/0312091 A1
- Conditioning method and conditioning device8 Oct 2026US 2026/0312092 A1Robert Bosch GmbH
- Method for operating a fuel cell system, and control device8 Oct 2026US 2026/0312093 A1Robert Bosch GmbH
- Fuel cell system8 Oct 2026US 2026/0312094 A1Aisan Kogyo Kabushiki Kaisha
- Detection method for detecting a state of a fuel cell system8 Oct 2026US 2026/0312095 A1
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
- Power supply apparatus220US 6,882,131 B1Matsushita Electric Industrial Co., Ltd. · 2005
- Automatic voltage imbalance detector205US 4,424,491 AThe United States of America as represented by the United States Department of Energy · 1984
- Power supply system and electronic device196US 7,538,451 B2Sony Corporation · 2009
- Fuel cell system and control method182US 7,064,967 B2Hitachi Home & Life Solutions, Inc. · 2006