C25B 9/75
Having bipolar electrodes
Official title: having bipolar electrodes
C25B9/75 (Having bipolar electrodes) appears on 521 US grants and 679 published applications in this corpus.
Search patents in C25B- Granted patents
- 521
- Published applications
- 679
- Assignees
- 350
- Inventors
- 1,519
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 11 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 12 | 0 |
| 1981 | 15 | 0 |
| 1982 | 13 | 0 |
| 1983 | 12 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 17 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 7 |
| 2003 | 4 | 4 |
| 2004 | 4 | 10 |
| 2005 | 3 | 0 |
| 2006 | 5 | 6 |
| 2007 | 3 | 12 |
| 2008 | 6 | 6 |
| 2009 | 0 | 6 |
| 2010 | 7 | 13 |
| 2011 | 5 | 14 |
| 2012 | 7 | 9 |
| 2013 | 3 | 5 |
| 2014 | 7 | 22 |
| 2015 | 8 | 24 |
| 2016 | 10 | 27 |
| 2017 | 16 | 24 |
| 2018 | 21 | 15 |
| 2019 | 26 | 28 |
| 2020 | 19 | 30 |
| 2021 | 18 | 36 |
| 2022 | 21 | 58 |
| 2023 | 29 | 72 |
| 2024 | 32 | 100 |
| 2025 | 34 | 88 |
| 2026 | 31 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrolysis cell, electrolyzer and method for reducing CO26 Oct 2026US 12,753,522 B2Covestro Intellectual Property GmbH & Co.KG
- Multi-cell COx electrolyzer stacks29 Sep 2026US 12,747,510 B2Twelve Benefit Corporation
- Impedance monitoring of a modular electrolysis system25 Aug 2026US 12,716,141 B2Ohmium International, Inc.
- Three-dimensional plates with curving fluid channels for stack systems25 Aug 2026US 12,719,064 B2Plug Power Inc.
- Electrochemical cell and process for producing metal and chlorine gas18 Aug 2026US 12,709,814 B2University of Oregon
- Casing Structure Design for Electrolytic Cells8 Oct 2026US 2026/0308779 A1Viering, Jentschura & Partner mbB Patent und Rechtsanwälte
- Electrolyzer8 Oct 2026US 2026/0308781 A1
- Manifold insert for an electrochemical system1 Oct 2026US 2026/0302304 A1New Hydrogen IP, LLC
- Electrochemical electrode structure, electrochemical cell, bipolar electrode assembly, electrochemical cell arrangement, and method of attaching an electrode element to a supportive element of an electrochemical electrode structure for an electrochemical cell24 Sep 2026US 2026/0286549 A1thyssenkrupp nucera AG & Co. KGaA
- Porous transport layer17 Sep 2026US 2026/0275543 A1NV Bekaert SA
Most cited
By later US patents
- High pressure electrolyzer module197US 6,554,978 B1Vandenborre Technologies NV · 2003
- Electrolyser and components therefor190US 8,057,646 B2Hydrogenics Corporation · 2011
- Low cost bipolar current collector-separator for electrochemical cells160US 4,214,969 AGeneral Electric Company · 1980
- Membrane electrochemical cell provided with gas diffusion electrodes in contact with porour, flat, metal current conductors having highly distributed contact area91US 6,022,634 ADe Nora S.p.A. · 2000
- Electrochemical load management system for transportation applications86US 5,346,778 AEnergy Partners, Inc. · 1994