H01M 8/04089
Of gaseous reactants
Official title: of gaseous reactants
H01M8/04089 (Of gaseous reactants) appears on 5,811 US grants and 8,147 published applications in this corpus.
Search patents in H01M- Granted patents
- 5,811
- Published applications
- 8,147
- Assignees
- 1,375
- Inventors
- 10,123
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 10 | 0 |
| 1989 | 15 | 0 |
| 1990 | 12 | 0 |
| 1991 | 6 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 21 | 0 |
| 1995 | 14 | 0 |
| 1996 | 18 | 0 |
| 1997 | 22 | 0 |
| 1998 | 28 | 0 |
| 1999 | 47 | 0 |
| 2000 | 55 | 0 |
| 2001 | 71 | 66 |
| 2002 | 109 | 245 |
| 2003 | 172 | 291 |
| 2004 | 157 | 366 |
| 2005 | 161 | 423 |
| 2006 | 179 | 407 |
| 2007 | 158 | 456 |
| 2008 | 174 | 405 |
| 2009 | 186 | 447 |
| 2010 | 303 | 428 |
| 2011 | 274 | 305 |
| 2012 | 323 | 254 |
| 2013 | 238 | 220 |
| 2014 | 258 | 280 |
| 2015 | 231 | 297 |
| 2016 | 195 | 279 |
| 2017 | 234 | 233 |
| 2018 | 217 | 247 |
| 2019 | 222 | 273 |
| 2020 | 263 | 267 |
| 2021 | 243 | 260 |
| 2022 | 258 | 305 |
| 2023 | 285 | 407 |
| 2024 | 178 | 419 |
| 2025 | 219 | 306 |
| 2026 | 170 | 261 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fuel cell vehicle with differential pressure flow meter for humidity measurement6 Oct 2026US 12,752,667 B2Ford Global Technologies, LLC
- Hollow fiber membrane material for high-humidification hydrogen fuel cell humidifier and preparation method and application thereof6 Oct 2026US 12,753,530 B2University of Electronic Science and Technology of China
- Hybrid hydrogen fuel cell combustor power system6 Oct 2026US 12,755,989 B2Caterpillar Inc.
- Fuel cell system including ejector6 Oct 2026US 12,755,990 B2Versa Power Systems, Ltd.
- Fuel-cell exhaust system6 Oct 2026US 12,755,991 B2Purem GmbH
- Hollow fiber membrane module8 Oct 2026US 2026/0307014 A1Nok Corporation
- Managing a fuel cell system in a fuel cell vehicle8 Oct 2026US 2026/0312087 A1Volvo Truck Corporation
- Fuel cell system with improved humidifier8 Oct 2026US 2026/0312088 A1Plastic Omnium New Energies France
- Device for filtering ambient air8 Oct 2026US 2026/0312089 A1Cellcentric GmbH & Co. KG
- Fuel cell system and purging method for inerting a fuel cell system8 Oct 2026US 2026/0312091 A1
Most cited
By later US patents
- Coal gasification and hydrogen production system and method301US 5,955,039 ASiemens Westinghouse Power Corporation · 1999
- Process and system for converting carbonaceous feedstocks into energy without greenhouse gas emissions283US 6,187,465 B12001
- Free-standing and aligned carbon nanotubes and synthesis thereof254US 6,863,942 B2The Research Foundation of State University of New York · 2005
- Fuel cell gas management system240US 6,013,385 AEmprise Corporation · 2000
- Surface replica fuel cell for micro fuel cell electrical power pack208US 5,759,712 A1998