B01D 61/461
Comprising only a single cell, only one anion or cation exchange membrane
Official title: {comprising only a single cell, only one anion or cation exchange membrane or one pair of anion and cation membranes}
B01D61/461 (Comprising only a single cell, only one anion or cation exchange membrane) appears on 70 US grants and 114 published applications in this corpus.
Search patents in B01D- Granted patents
- 70
- Published applications
- 114
- Assignees
- 96
- Inventors
- 271
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 4 |
| 2015 | 3 | 4 |
| 2016 | 4 | 3 |
| 2017 | 1 | 9 |
| 2018 | 1 | 4 |
| 2019 | 6 | 5 |
| 2020 | 6 | 8 |
| 2021 | 4 | 8 |
| 2022 | 2 | 7 |
| 2023 | 3 | 8 |
| 2024 | 3 | 13 |
| 2025 | 8 | 11 |
| 2026 | 5 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and methods for nitrogen reduction in wastewater11 Aug 2026US 12,703,650 B2The Board of Trustees of the Leland Stanford Junior University
- Direct production of lithium hydroxide from brine by electrochemical flow cells12 May 2026US 12,623,932 B2The Regents of the University of Michigan
- Lithium ion conductor-polymer-ceramic membrane17 Feb 2026US 12,551,856 B2ElectraLith Pty Ltd
- Ratchet-based ion pumping membrane systems20 Jan 2026US 12,528,052 B2The Regents of the University of California
- Electrochemical desalination system6 Jan 2026US 12,515,166 B2Genesee Valley Innovations, LLC
- Water treatment apparatus and control method of water treatment apparatus20 Aug 2026US 2026/0242258 A1Samsung Electronics Co., Ltd.
- Reverse electro-osmotic filtration exploiting nanofluidic transport through asymmetric membrane13 Aug 2026US 2026/0233166 A1
- Chemically enhanced electrodialysis (ceed): a universal platform for selective ion removal30 Jul 2026US 2026/0216660 A1Texas Tech University System
- Method of capturing co2 from a gas mixture23 Jul 2026US 2026/0208108 A1Mission Zero Technologies Ltd
- Zero waste closed-loop green lithium-ion battery recycling25 Jun 2026US 2026/0176717 A1American Advanced Membrane Technology LLC
Most cited
By later US patents
- Reversible electrolytic system for softening and dealkalizing water93US 4,671,863 A1987
- Apparatus for the continuous electrochemical desalination of aqueous solutions80US 5,376,253 AChrist AG · 1994
- Electrodialysis apparatus and process59US 4,608,140 AIonics, Incorporated · 1986
- Microliter scale electrodialysis apparatus52US 4,614,576 AIonics, Incorporated · 1986
- Electrodialysis device47US 4,226,688 AYeda Research and Development Co. Ltd. · 1980