H01M 8/04134
By coolants
Official title: {by coolants}
H01M8/04134 (By coolants) appears on 89 US grants and 120 published applications in this corpus.
Search patents in H01M- Granted patents
- 89
- Published applications
- 120
- Assignees
- 64
- Inventors
- 253
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 1 | 5 |
| 2003 | 0 | 5 |
| 2004 | 7 | 5 |
| 2005 | 4 | 7 |
| 2006 | 5 | 8 |
| 2007 | 3 | 11 |
| 2008 | 3 | 5 |
| 2009 | 3 | 6 |
| 2010 | 7 | 7 |
| 2011 | 3 | 3 |
| 2012 | 3 | 4 |
| 2013 | 3 | 2 |
| 2014 | 2 | 2 |
| 2015 | 0 | 4 |
| 2016 | 2 | 0 |
| 2017 | 5 | 6 |
| 2018 | 2 | 4 |
| 2019 | 4 | 7 |
| 2020 | 9 | 3 |
| 2021 | 4 | 3 |
| 2022 | 6 | 6 |
| 2023 | 4 | 7 |
| 2024 | 0 | 2 |
| 2025 | 5 | 5 |
| 2026 | 3 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Cooling apparatus of fuel cell vehicle26 May 2026US 12,640,378 B2Hyundai Motor Company
- Four-fluid bipolar plate for fuel cell17 Feb 2026US 12,555,804 B2Nimbus Power Systems, Inc.
- Fuel cell membrane humidifier and fuel cell system having same3 Feb 2026US 12,542,288 B2Kolon Industries, Inc.
- Air cooler and fuel cell system30 Sep 2025US 12,431,514 B2Hyundai Motor Company
- Four-fluid bipolar plate for fuel cell8 Jul 2025US 12,355,120 B2Nimbus Power Systems, Inc.
- Bipolar plate for electrochemical device23 Jul 2026US 2026/0213230 A1Nimbus Power Systems, Inc.
- Four-fluid bipolar plate for fuel cell and methods of operation9 Apr 2026US 2026/0100386 A1Nimbus Power Systems, Inc.
- Fuel Cell System8 Jan 2026US 2026/0011756 A1Hyundai Motor Company
- Fuel cell system4 Dec 2025US 2025/0372672 A1Kabushiki Kaisha Toshiba
- Fuel cell cooling and waste heat recovery system for generating power for aircraft systems20 Nov 2025US 2025/0353601 A1Hamilton Sundstrand Corporation
Most cited
By later US patents
- Direct antifreeze cooled fuel cell power plant51US 6,432,566 B1UTC Fuel Cells, LLC · 2002
- Direct antifreeze cooled fuel cell19US 6,316,135 B1International Fuel Cells Corporation · 2001
- Fuel cell with cooling system based on direct injection of liquid water18US 6,835,477 B1Nuvera Fuel Cells Europe S.R.L. · 2004
- Fuel cell systems with evaporative cooling and methods for humidifying and adjusting the temperature of the reactant streams15US 6,779,351 B2Idalex Technologies, Inc. · 2004
- Fuel cell-use humidifier12US 7,156,379 B2Ube Industries, Ltd. · 2007