H01M 8/04761
Of fuel cell exhausts
Official title: {of fuel cell exhausts}
H01M8/04761 (Of fuel cell exhausts) appears on 485 US grants and 741 published applications in this corpus.
Search patents in H01M- Granted patents
- 485
- Published applications
- 741
- Assignees
- 189
- Inventors
- 1,251
- Latest grant
- 1 Sep 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 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 5 |
| 2002 | 1 | 8 |
| 2003 | 8 | 3 |
| 2004 | 3 | 17 |
| 2005 | 7 | 20 |
| 2006 | 3 | 16 |
| 2007 | 5 | 38 |
| 2008 | 6 | 38 |
| 2009 | 17 | 40 |
| 2010 | 16 | 38 |
| 2011 | 31 | 26 |
| 2012 | 30 | 14 |
| 2013 | 24 | 26 |
| 2014 | 29 | 42 |
| 2015 | 16 | 30 |
| 2016 | 29 | 30 |
| 2017 | 24 | 21 |
| 2018 | 27 | 26 |
| 2019 | 15 | 31 |
| 2020 | 31 | 24 |
| 2021 | 28 | 40 |
| 2022 | 29 | 29 |
| 2023 | 34 | 48 |
| 2024 | 19 | 47 |
| 2025 | 23 | 42 |
| 2026 | 23 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell charge air system and method1 Sep 2026US 12,725,819 B2Caterpillar Inc.
- Fuel-cell exhaust arrangement18 Aug 2026US 12,712,190 B2Purem GmbH
- Method for protecting components of a fuel cell system21 Jul 2026US 12,689,048 B2Robert Bosch GmbH
- Fuel cell system23 Jun 2026US 12,665,208 B2Honda Motor Co., Ltd.
- Air supply apparatus for a ship, ship including the same, and method of supplying air to an air lubrication device16 Jun 2026US 12,654,832 B2Accelleron Switzerland Ltd.
- Purge air sealing valve8 Oct 2026US 2026/0309238 A1GM Global Technology Operations LLC
- Detection method for detecting a state of a fuel cell system8 Oct 2026US 2026/0312095 A1
- Controlled dynamic airflow control in a fuel cell system24 Sep 2026US 2026/0290857 A1Intelligent Energy Limited
- Fuel cell system10 Sep 2026US 2026/0269284 A1Honda Motor Co., Ltd.
- Fuel cell system10 Sep 2026US 2026/0269290 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Power supply apparatus220US 6,882,131 B1Matsushita Electric Industrial Co., Ltd. · 2005
- Portable fuel cell power supply134US 6,268,077 B1Motorola, Inc. · 2001
- System and method for optimizing fuel cell purge cycles110US 6,242,120 B1IdaTech, LLC · 2001
- Co-production of hydrogen and electricity in a high temperature electrochemical system61US 7,482,078 B2Bloom Energy Corporation · 2009
- Shut-off device for fuel cell system59US 5,154,986 AYamaha Hatsudoki Kabushiki Kaisha · 1992