H01M 8/04507
Of cathode reactants at the inlet or inside the fuel cell
Official title: {of cathode reactants at the inlet or inside the fuel cell}
H01M8/04507 (Of cathode reactants at the inlet or inside the fuel cell) appears on 117 US grants and 167 published applications in this corpus.
Search patents in H01M- Granted patents
- 117
- Published applications
- 167
- Assignees
- 74
- Inventors
- 374
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 1 | 4 |
| 2003 | 0 | 3 |
| 2004 | 2 | 5 |
| 2005 | 4 | 4 |
| 2006 | 4 | 7 |
| 2007 | 2 | 7 |
| 2008 | 4 | 5 |
| 2009 | 0 | 13 |
| 2010 | 6 | 11 |
| 2011 | 5 | 13 |
| 2012 | 6 | 3 |
| 2013 | 9 | 7 |
| 2014 | 10 | 6 |
| 2015 | 4 | 3 |
| 2016 | 10 | 5 |
| 2017 | 3 | 7 |
| 2018 | 7 | 8 |
| 2019 | 4 | 6 |
| 2020 | 11 | 5 |
| 2021 | 5 | 7 |
| 2022 | 5 | 5 |
| 2023 | 4 | 11 |
| 2024 | 6 | 8 |
| 2025 | 4 | 10 |
| 2026 | 1 | 4 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Humidifier for fuel cell10 Feb 2026US 12,548,787 B2Hyundai Motor Company
- Method for operating a fuel cell device, the fuel cell device, and a motor vehicle outfitted with a fuel cell device16 Dec 2025US 12,500,250 B2Audi AG
- Method, apparatus and system for capturing carbon using fuel cell30 Sep 2025US 12,431,561 B2Carbon Energy Inc.
- Fuel cell apparatus6 May 2025US 12,294,123 B2LG Electronics Inc.
- Method for controlling humidity in a fuel cell11 Mar 2025US 12,249,743 B2Symbio
- Method and system for controlling water balance in metal-air electrochemical cells7 May 2026US 2026/0128332 A1
- Method for estimating partial pressures and relative humidity of gases in fuel cell5 Mar 2026US 2026/0066317 A1Hyundai Motor Company
- Systems and methods for fuel cell cathode exhaust humidity control26 Feb 2026US 2026/0058177 A1Caterpillar Inc.
- Apparatus and method for determining air distribution performance of a fuel cell system22 Jan 2026US 2026/0024789 A1Hyundai Motor Company
- Post humidifier fuel cell stack humidification system18 Dec 2025US 2025/0385286 A1
Most cited
By later US patents
- System and method for controlling the humidity level of a fuel cell92US 6,376,111 B1General Motors Corporation · 2002
- Relative humidity sensor with compensation for changes in pressure and gas composition16US 6,777,120 B2General Motors Corporation · 2004
- Humidity sensing device for use in fuel cell systems11US 8,105,720 B2GM Global Technologies LLC · 2012
- Remedial actions for air flow errors in a fuel cell system9US 9,281,532 B2GM Global Technology Operations LLC · 2016
- Electronic by-pass control of gas around the humidifier to the fuel cell stack8US 6,884,534 B2General Motors Corporation · 2005