H01M 8/04694
Characterised by variables to be controlled
Official title: characterised by variables to be controlled
H01M8/04694 (Characterised by variables to be controlled) appears on 4,787 US grants and 7,174 published applications in this corpus.
Search patents in H01M- Granted patents
- 4,787
- Published applications
- 7,174
- Assignees
- 1,067
- Inventors
- 8,308
- 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 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 20 | 19 |
| 2002 | 25 | 92 |
| 2003 | 52 | 98 |
| 2004 | 66 | 166 |
| 2005 | 55 | 211 |
| 2006 | 82 | 247 |
| 2007 | 75 | 259 |
| 2008 | 73 | 266 |
| 2009 | 108 | 298 |
| 2010 | 139 | 366 |
| 2011 | 179 | 276 |
| 2012 | 225 | 246 |
| 2013 | 222 | 226 |
| 2014 | 245 | 299 |
| 2015 | 223 | 276 |
| 2016 | 225 | 282 |
| 2017 | 217 | 276 |
| 2018 | 240 | 303 |
| 2019 | 274 | 355 |
| 2020 | 301 | 332 |
| 2021 | 308 | 317 |
| 2022 | 324 | 375 |
| 2023 | 378 | 489 |
| 2024 | 210 | 381 |
| 2025 | 255 | 386 |
| 2026 | 181 | 333 |
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
- Advanced power electronic circuit for fuel cell vehicles enabling independent cooling of various systems8 Oct 2026US 2026/0307542 A1Ford Global Technologies, LLC
- Purge air sealing valve8 Oct 2026US 2026/0309238 A1GM Global Technology Operations LLC
- Fuel cell system with improved humidifier8 Oct 2026US 2026/0312088 A1Plastic Omnium New Energies France
- 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
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
- Surface replica fuel cell for micro fuel cell electrical power pack208US 5,759,712 A1998
- 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