H01M 4/94
Non-porous diffusion electrodes
Official title: Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes
H01M4/94 (Non-porous diffusion electrodes) appears on 78 US grants and 132 published applications in this corpus.
Search patents in H01M- Granted patents
- 78
- Published applications
- 132
- Assignees
- 75
- Inventors
- 268
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 5 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 11 |
| 2007 | 2 | 13 |
| 2008 | 0 | 7 |
| 2009 | 3 | 5 |
| 2010 | 5 | 10 |
| 2011 | 6 | 0 |
| 2012 | 8 | 5 |
| 2013 | 4 | 4 |
| 2014 | 3 | 6 |
| 2015 | 4 | 2 |
| 2016 | 2 | 4 |
| 2017 | 3 | 8 |
| 2018 | 2 | 8 |
| 2019 | 2 | 5 |
| 2020 | 9 | 8 |
| 2021 | 3 | 8 |
| 2022 | 4 | 7 |
| 2023 | 4 | 0 |
| 2024 | 4 | 9 |
| 2025 | 3 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas diffusion electrode and use thereof23 Sep 2025US 12,424,637 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Anion exchange polymers and anion exchange membranes incorporating same12 Aug 2025US 12,383,872 B2
- Sealed redox battery1 Apr 2025US 12,266,837 B2Standard Energy Inc.
- Sealed redox battery20 Aug 2024US 12,068,513 B2Standard Energy Inc.
- Anion exchange polymers and anion exchange membranes incorporating same5 Mar 2024US 11,918,959 B2Ffi Ionix IP, Inc.
- Water Forming Reaction Mixtures2 Oct 2025US 2025/0309301 A1Brilliant Light Power, Inc.
- Unified assembly for electrochemical device24 Jul 2025US 2025/0239637 A1Hyaxiom, Inc.
- Electrochemical hydrogen-catalyst power system9 Jan 2025US 2025/0015309 A1Brilliant Light Power, Inc.
- Flow battery stack or single cell, membrane-electrode assembly and composite electrode structure thereof26 Dec 2024US 2024/0429403 A1Shanghai Longvault Energy Technology Co., Ltd.
- Processes for Producing Reactant Chemical Substances5 Dec 2024US 2024/0405240 A1Alpha Portfolio LLC
Most cited
By later US patents
- Hydrogen separation using coated titanium alloys130US 4,468,235 A1984
- Fuel system using redox flow battery108US 8,778,552 B224M Technologies, Inc. · 2014
- Fuel system using redox flow battery103US 9,293,781 B224M Technologies, Inc. · 2016
- Fuel cell manufacturing method and fuel cell95US 7,611,795 B2Toyota Jidosha Kabushiki Kaisha · 2009
- Fuel system using redox flow battery93US 9,583,780 B224M Technologies, Inc. · 2017