C25B 9/23
Comprising ion-exchange membranes in or on which electrode material is embedded
Official title: comprising ion-exchange membranes in or on which electrode material is embedded
C25B9/23 (Comprising ion-exchange membranes in or on which electrode material is embedded) appears on 1,102 US grants and 1,957 published applications in this corpus.
Search patents in C25B- Granted patents
- 1,102
- Published applications
- 1,957
- Assignees
- 754
- Inventors
- 3,634
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 14 | 0 |
| 1982 | 14 | 0 |
| 1983 | 10 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 10 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 12 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 5 | 0 |
| 1998 | 14 | 0 |
| 1999 | 15 | 0 |
| 2000 | 8 | 0 |
| 2001 | 16 | 6 |
| 2002 | 15 | 9 |
| 2003 | 14 | 16 |
| 2004 | 12 | 18 |
| 2005 | 9 | 14 |
| 2006 | 6 | 14 |
| 2007 | 9 | 15 |
| 2008 | 9 | 17 |
| 2009 | 4 | 19 |
| 2010 | 6 | 15 |
| 2011 | 14 | 20 |
| 2012 | 7 | 28 |
| 2013 | 12 | 46 |
| 2014 | 25 | 48 |
| 2015 | 22 | 64 |
| 2016 | 21 | 45 |
| 2017 | 35 | 72 |
| 2018 | 27 | 68 |
| 2019 | 54 | 90 |
| 2020 | 59 | 126 |
| 2021 | 66 | 129 |
| 2022 | 83 | 153 |
| 2023 | 101 | 198 |
| 2024 | 87 | 256 |
| 2025 | 126 | 288 |
| 2026 | 75 | 183 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Membrane electrode assembly for PEM water electrolysis capable of improving the electrical conductivity of the electrode layer and method of manufacturing thereof6 Oct 2026US 12,753,520 B2Korea Institute of Energy Research
- Aqueous Zn||NO2 electrochemical cell6 Oct 2026US 12,756,037 B2City University of Hong Kong
- Water electrolysis cell and manufacturing method of the same22 Sep 2026US 12,742,244 B2Toyota Jidosha Kabushiki Kaisha
- Hydrophilic member with cation and anion conducting membranes22 Sep 2026US 12,742,247 B2Ohmium International, Inc.
- Device and method for carbon dioxide electrolysis or carbon monoxide electrolysis22 Sep 2026US 12,742,248 B2Siemens Energy Global GmbH & Co. KG
- Ammonia cracker8 Oct 2026US 2026/0308771 A1
- Co2 and h2o co-electrolyser system8 Oct 2026US 2026/0308775 A1Ecole Polytechnique Federale De Lausanne (Epfl)
- Electrode composition for proton exchange membrane water electrolysis, electrode for proton exchange membrane water electrolysis, anode, membrane-electrode assembly, and proton exchange membrane water electrolysis cell8 Oct 2026US 2026/0308785 A1Hyundai Motor Company
- Oxygen evolution reaction catalyst and method for its preparation8 Oct 2026US 2026/0308786 A1Johnson Matthey Public Limited Company
- Electrolyte membrane, catalyst-coated electrolyte membrane and transfer sheet used for production thereof, membrane electrode assembly, water electrolysis device, and method of producing catalyst-coated electrolyte membrane1 Oct 2026US 2026/0297766 A1Toray Industries, Inc.
Most cited
By later US patents
- Deposition of catalytic electrodes on ion-exchange membranes254US 4,364,803 AOronzio de Nora Impianti Elettrochimici S.p.A. · 1982
- Membrane electrode assembly181US 5,879,828 AMinnesota Mining and Manufacturing Company · 1999
- Process of manufacturing porous separator for electrochemical power supply154US 5,948,464 AImra America, Inc. · 1999
- Membrane-electrode assemblies for electrochemical cells150US 5,272,017 AGeneral Motors Corporation · 1993
- Membrane and electrode structure142US 5,330,860 AE. I. Du Pont de Nemours and Company · 1994