H01M 8/04955
Shut-off or shut-down of fuel cells
H01M8/04955 (Shut-off or shut-down of fuel cells) appears on 670 US grants and 944 published applications in this corpus.
Search patents in H01M- Granted patents
- 670
- Published applications
- 944
- Assignees
- 257
- Inventors
- 1,701
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 3 |
| 2002 | 3 | 22 |
| 2003 | 10 | 16 |
| 2004 | 14 | 30 |
| 2005 | 8 | 51 |
| 2006 | 17 | 52 |
| 2007 | 14 | 65 |
| 2008 | 15 | 65 |
| 2009 | 22 | 59 |
| 2010 | 39 | 56 |
| 2011 | 41 | 44 |
| 2012 | 44 | 44 |
| 2013 | 39 | 32 |
| 2014 | 37 | 40 |
| 2015 | 35 | 28 |
| 2016 | 30 | 23 |
| 2017 | 27 | 23 |
| 2018 | 20 | 35 |
| 2019 | 31 | 28 |
| 2020 | 33 | 37 |
| 2021 | 28 | 20 |
| 2022 | 27 | 37 |
| 2023 | 35 | 66 |
| 2024 | 18 | 27 |
| 2025 | 37 | 27 |
| 2026 | 19 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell system and fuel cell vehicle6 Oct 2026US 12,752,643 B2Kabushiki Kaisha Toyota Jidoshokki
- Method for controlling fuel cell of fuel cell vehicle22 Sep 2026US 12,741,566 B2Hyundai Motor Company
- Connected fuel cell vehicle predictive freeze wake scheduling18 Aug 2026US 12,712,189 B2Ford Global Technologies, LLC
- Fuel cell stack diagnostics using crowdsourcing for connected fuel cell vehicle4 Aug 2026US 12,700,601 B2Ford Global Technologies, LLC
- Systems and methods for monitoring a fuel cell4 Aug 2026US 12,700,602 B2Hyster-Yale Materials Handling, Inc.
- Systems and methods for monitoring a fuel cell24 Sep 2026US 2026/0290865 A1Hyster-Yale Materials Handling, Inc.
- Fuel cell system and method of operating the fuel cell system10 Sep 2026US 2026/0264573 A1Volvo Truck Corporation
- Fuel cell system20 Aug 2026US 2026/0245929 A1Aisin Corporation
- Method for removing v2o5 deposits in a redox flow battery module20 Aug 2026US 2026/0245932 A1LIVA Power Management Systems GmbH
- Fuel cell system and method for operating a fuel cell system13 Aug 2026US 2026/0237691 A1Schaeffler Technologies AG & Co. KG
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
- Fuel cell system controller115US 6,495,277 B1IdaTech, LLC · 2002
- Fuel cell/battery hybrid power system for vehicle104US 5,631,532 AAisin Aw Co., Ltd. · 1997
- Arrangement for ensuring uninterrupted current supply to an electrical consumer104US 6,011,324 AAEG Energietechnik GmbH · 2000
- Fuel cell and method for controlling same103US 6,096,449 AAvista Labs · 2000