B01D 53/326
In electrochemical cells
Official title: {in electrochemical cells}
B01D53/326 (In electrochemical cells) appears on 579 US grants and 703 published applications in this corpus.
Search patents in B01D- Granted patents
- 579
- Published applications
- 703
- Assignees
- 358
- Inventors
- 1,413
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 18 | 0 |
| 1996 | 11 | 0 |
| 1997 | 17 | 0 |
| 1998 | 22 | 0 |
| 1999 | 17 | 0 |
| 2000 | 17 | 0 |
| 2001 | 21 | 7 |
| 2002 | 12 | 13 |
| 2003 | 17 | 13 |
| 2004 | 10 | 16 |
| 2005 | 9 | 9 |
| 2006 | 4 | 11 |
| 2007 | 4 | 10 |
| 2008 | 5 | 9 |
| 2009 | 4 | 20 |
| 2010 | 7 | 13 |
| 2011 | 8 | 15 |
| 2012 | 6 | 13 |
| 2013 | 10 | 17 |
| 2014 | 13 | 20 |
| 2015 | 14 | 16 |
| 2016 | 12 | 20 |
| 2017 | 14 | 25 |
| 2018 | 13 | 29 |
| 2019 | 18 | 40 |
| 2020 | 29 | 41 |
| 2021 | 20 | 51 |
| 2022 | 27 | 46 |
| 2023 | 39 | 72 |
| 2024 | 40 | 76 |
| 2025 | 41 | 60 |
| 2026 | 21 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- CO2 separation systems and methods25 Aug 2026US 12,714,970 B2Carbonquest, Inc.
- Method of purifying helium from mixed gas28 Jul 2026US 12,691,408 B2Skyre, Inc.
- Composite for electrochemical gas separation28 Jul 2026US 12,691,409 B2Verdox, Inc.
- Systems and methods of ammonia synthesis21 Jul 2026US 12,686,935 B2Ohmium International, Inc.
- Carbon dioxide recovery system14 Jul 2026US 12,678,733 B2Denso Corporation
- Carbon dioxide adsorption battery, charge/discharge device, and carbon dioxide concentration device8 Oct 2026US 2026/0307004 A1Kuraray Co., Ltd.
- Improved electrodes for electrochemically driven carbon dioxide separator1 Oct 2026US 2026/0295518 A1Repair DAC Ltd.
- Devices, systems, and methods for the electrochemical generation of base/acid and deionization of saline water1 Oct 2026US 2026/0297762 A1Capture6 Corp
- Systems and methods of ammonia synthesis1 Oct 2026US 2026/0297781 A1Ohmium International, Inc.
- Carbon dioxide capture using redox-active species and related systems and methods24 Sep 2026US 2026/0284588 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Electrochemical production of ozone and hydrogen peroxide465US 5,972,196 ALynntech, Inc. · 1999
- Portable oxygen concentration system and method of using the same310US 6,651,658 B1SeQual Technologies, Inc. · 2003
- Portable oxygen concentration system and method of using the same223US 6,691,702 B2SeQual Technologies, Inc. · 2004
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions202US 5,306,411 AThe Standard Oil Company · 1994
- Portable oxygen concentration system and method of using the same182US 6,629,525 B2SeQual Technologies, Inc. · 2003