H01M 8/04303
Applied during shut-down
Official title: applied during shut-down
H01M8/04303 (Applied during shut-down) appears on 517 US grants and 740 published applications in this corpus.
Search patents in H01M- Granted patents
- 517
- Published applications
- 740
- Assignees
- 189
- Inventors
- 1,401
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 4 |
| 2002 | 8 | 19 |
| 2003 | 8 | 26 |
| 2004 | 11 | 23 |
| 2005 | 16 | 39 |
| 2006 | 11 | 31 |
| 2007 | 9 | 28 |
| 2008 | 15 | 30 |
| 2009 | 15 | 32 |
| 2010 | 24 | 39 |
| 2011 | 21 | 36 |
| 2012 | 19 | 25 |
| 2013 | 22 | 31 |
| 2014 | 24 | 23 |
| 2015 | 23 | 29 |
| 2016 | 25 | 22 |
| 2017 | 30 | 32 |
| 2018 | 19 | 35 |
| 2019 | 34 | 26 |
| 2020 | 31 | 24 |
| 2021 | 23 | 21 |
| 2022 | 26 | 31 |
| 2023 | 27 | 43 |
| 2024 | 14 | 35 |
| 2025 | 26 | 24 |
| 2026 | 10 | 32 |
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
- 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
- System and method for fuel cell operation mode selection during power demand events2 Jun 2026US 12,643,406 B2Ford Global Technologies, LLC
- Fuel-consuming power generator-based control method, control device and well-site stimulation method19 May 2026US 12,631,101 B2Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Managing a fuel cell system in a fuel cell vehicle8 Oct 2026US 2026/0312087 A1Volvo Truck Corporation
- Fuel cell system and control method thereof1 Oct 2026US 2026/0302294 A1Honda Motor Co., Ltd.
- Apparatus for Controlling Valve of Fuel Cell System, Method Thereof and Vehicle Including Same1 Oct 2026US 2026/0302296 A1Hyundai Motor Company
- Fuel cell system and method of operating the fuel cell system10 Sep 2026US 2026/0264573 A1Volvo Truck Corporation
- Fuel Cell System And Method Of Returning From Idle Stop Operation To Normal Operation3 Sep 2026US 2026/0260917 A1Honda Motor Co., Ltd.
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
- Method and apparatus for commencing operation of a fuel cell electric power generation system below the freezing temperature of water126US 5,798,186 ABallard Power Systems Inc. · 1998
- Reformer and fuel cell system using the same103US 5,616,430 AToyota Jidosha Kabushiki Kaisha · 1997
- Fuel cell generator and method of the same98US 5,712,052 AToyota Jidosha Kabushiki Kaisha · 1998
- Fuel cell system88US 4,657,828 AFuji Electric Co., Ltd. · 1987