H01M 8/2457
With both reactants being gaseous or vaporised
Official title: with both reactants being gaseous or vaporised
H01M8/2457 (With both reactants being gaseous or vaporised) appears on 1,186 US grants and 1,345 published applications in this corpus.
Search patents in H01M- Granted patents
- 1,186
- Published applications
- 1,345
- Assignees
- 394
- Inventors
- 2,534
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 8 | 0 |
| 1996 | 11 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 18 | 0 |
| 2000 | 18 | 0 |
| 2001 | 23 | 10 |
| 2002 | 16 | 52 |
| 2003 | 22 | 79 |
| 2004 | 40 | 113 |
| 2005 | 41 | 91 |
| 2006 | 39 | 80 |
| 2007 | 42 | 86 |
| 2008 | 38 | 70 |
| 2009 | 55 | 89 |
| 2010 | 81 | 88 |
| 2011 | 70 | 65 |
| 2012 | 65 | 49 |
| 2013 | 61 | 54 |
| 2014 | 53 | 58 |
| 2015 | 56 | 56 |
| 2016 | 52 | 51 |
| 2017 | 44 | 37 |
| 2018 | 45 | 26 |
| 2019 | 43 | 28 |
| 2020 | 25 | 27 |
| 2021 | 34 | 28 |
| 2022 | 23 | 22 |
| 2023 | 25 | 30 |
| 2024 | 15 | 20 |
| 2025 | 18 | 21 |
| 2026 | 11 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell9 Jun 2026US 12,651,756 B2Hyundai Motor Company
- 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.
- Bipolar plate for an electrochemical cell, method for manufacturing said bipolar plate, arrangement of electrochemical cells, and method for operating said arrangement of electrochemical cells12 May 2026US 12,626,933 B2Robert Bosch GmbH
- Fuel cell system21 Apr 2026US 12,609,337 B2Honda Motor Co., Ltd.
- Fuel cell stack14 Apr 2026US 12,603,303 B2Toyota Boshoku Kabushiki Kaisha
- Balance-of-plant for electro-synthetic or electro-energy liquid-gas cells or cell stacks10 Sep 2026US 2026/0269283 A1Hysata Pty Ltd
- Manifold for a fuel cell10 Sep 2026US 2026/0269298 A1Safran Power Units
- Fuel Gas Supply Device20 Aug 2026US 2026/0245926 A1Honda Motor Co., Ltd.
- Fuel cell stack23 Jul 2026US 2026/0213243 A1Toyota Jidosha Kabushiki Kaisha
- Composite powder, method for manufacturing composite powder, gas diffusion layer, membrane electrode assembly, and fuel cell25 Jun 2026US 2026/0179977 A1Panasonic Intellectual Property Management 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
- Surface replica fuel cell for micro fuel cell electrical power pack208US 5,759,712 A1998
- Purge gas protected transportable pressurized fuel cell modules and their operation in a power plant195US 5,573,867 AWestinghouse Electric Corp. · 1996
- Fuel cell system with combustor-heated reformer172US 6,077,620 AGeneral Motors Corporation · 2000
- Fuel cell system utilizing ion exchange membranes and bipolar plates150US 4,175,165 AEngelhard Minerals & Chemicals Corporation · 1979