H01M 4/8631
Bipolar electrodes
Official title: {Bipolar electrodes}
H01M4/8631 (Bipolar electrodes) appears on 53 US grants and 81 published applications in this corpus.
Search patents in H01M- Granted patents
- 53
- Published applications
- 81
- Assignees
- 59
- Inventors
- 235
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 2 |
| 2004 | 1 | 5 |
| 2005 | 1 | 1 |
| 2006 | 3 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 4 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 3 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 7 |
| 2016 | 4 | 3 |
| 2017 | 6 | 2 |
| 2018 | 0 | 0 |
| 2019 | 4 | 3 |
| 2020 | 1 | 3 |
| 2021 | 1 | 1 |
| 2022 | 3 | 6 |
| 2023 | 3 | 9 |
| 2024 | 2 | 13 |
| 2025 | 4 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Part coated with a carbon-based layer4 Aug 2026US 12,698,556 B2Hydromecanique Et Frottement
- Bipolar plate having inclined inflow duct portions for a fuel cell stack, fuel cell system and motor vehicle31 Mar 2026US 12,592,399 B2Audi AG
- Stabilized catalyst layers via controlled cracking12 Aug 2025US 12,388,092 B2Robert Bosch GmbH
- Bipolar plate for a fuel cell for generation of electrical power5 Aug 2025US 12,381,234 B2Airbus Operations GmbH
- Proton-exchange-membrane fuel cell17 Jun 2025US 12,334,565 B2Symbio
- Bipolar plate assembly for electrolysis cell16 Jul 2026US 2026/0204593 A1GM Global Technology Operations LLC
- Electrodes Employing Aptamer-Based Recognition for Colorimetric Visualization4 Jun 2026US 2026/0153488 A1University of Cincinnati
- Membrane electrode assembly having bifunctional catalysts for fuel cells and electrolyzers1 Jan 2026US 2026/0002269 A1GM Global Technology Operations LLC
- Stabilized catalyst layers via controlled cracking27 Nov 2025US 2025/0364575 A1Robert Bosch GmbH
- Bipolar plate for metal-air/liquid batteries18 Sep 2025US 2025/0293265 A1Rtx Corporation
Most cited
By later US patents
- 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 system using redox flow battery93US 9,583,780 B224M Technologies, Inc. · 2017
- Fuel cell system for low pressure operation66US 6,054,228 ALynntech, Inc. · 2000
- Bipolar electrode-electrolyte unit60US 5,955,215 ADornier GmbH · 1999