H01M 8/04835
Of fuel cell reactants
Official title: {of fuel cell reactants}
H01M8/04835 (Of fuel cell reactants) appears on 216 US grants and 328 published applications in this corpus.
Search patents in H01M- Granted patents
- 216
- Published applications
- 328
- Assignees
- 129
- Inventors
- 737
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 8 |
| 2003 | 0 | 2 |
| 2004 | 7 | 7 |
| 2005 | 3 | 9 |
| 2006 | 4 | 13 |
| 2007 | 5 | 18 |
| 2008 | 2 | 12 |
| 2009 | 3 | 14 |
| 2010 | 7 | 19 |
| 2011 | 13 | 21 |
| 2012 | 9 | 8 |
| 2013 | 15 | 9 |
| 2014 | 14 | 16 |
| 2015 | 12 | 12 |
| 2016 | 12 | 11 |
| 2017 | 8 | 12 |
| 2018 | 11 | 7 |
| 2019 | 11 | 23 |
| 2020 | 18 | 10 |
| 2021 | 10 | 10 |
| 2022 | 14 | 17 |
| 2023 | 10 | 21 |
| 2024 | 10 | 14 |
| 2025 | 8 | 18 |
| 2026 | 5 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel cell vehicle with differential pressure flow meter for humidity measurement6 Oct 2026US 12,752,667 B2Ford Global Technologies, LLC
- Humidifier2 Jun 2026US 12,646,728 B2Aisin Corporation
- Hydrogen generation electricity system for producing electricity from hydrogen using a hydrogen carrier substance and a method for operating the hydrogen generation electricity system24 Mar 2026US 12,586,800 B2Dens B.V.
- Fuel cell system17 Feb 2026US 12,555,807 B2Hyundai Motor Company
- Method for diagnosing deterioration of fuel cell and method and system for preventing deterioration of fuel cell using the same27 Jan 2026US 12,537,209 B2Hyundai Motor Company
- Conditioning method and conditioning device8 Oct 2026US 2026/0312092 A1Robert Bosch GmbH
- Fuel cell activation device1 Oct 2026US 2026/0302287 A1Honda Motor Co., Ltd.
- Swelling reduction system1 Oct 2026US 2026/0302291 A1Subaru Corporation
- Inspection method for controlling the opening duration of an outlet valve of a liquid container in an anode exhaust section of a fuel cell system20 Aug 2026US 2026/0245931 A1AVL List GmbH
- Control device, fuel cell system, and control method20 Aug 2026US 2026/0245934 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Hydrocarbon fueled solid polymer fuel cell electric power generation system168US 5,360,679 ABallard Power Systems Inc. · 1994
- Proton exchange membrane fuel cell power system111US 6,030,718 AAvista Corporation · 2000
- Fuel-cells generator system and method of generating electricity from fuel cells75US 5,925,476 AToyota Jidosha Kabushiki Kaisha · 1999
- Proton exchange membrane fuel cell power system63US 6,218,035 B1Avista Laboratories, Inc. · 2001
- Device and method for monitoring fuel cell performance and controlling a fuel cell system33US 6,762,587 B1Recon Industrial Controls Corp. · 2004