B01D 61/42
Electrodialysis
Official title: Electrodialysis; Electro-osmosis {; Electro-ultrafiltration; Membrane capacitive deionization}
B01D61/42 (Electrodialysis) appears on 1,717 US grants and 1,752 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,717
- Published applications
- 1,752
- Assignees
- 925
- Inventors
- 3,789
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 18 | 0 |
| 1978 | 24 | 0 |
| 1979 | 19 | 0 |
| 1980 | 24 | 0 |
| 1981 | 16 | 0 |
| 1982 | 15 | 0 |
| 1983 | 13 | 0 |
| 1984 | 12 | 0 |
| 1985 | 16 | 0 |
| 1986 | 29 | 0 |
| 1987 | 38 | 0 |
| 1988 | 20 | 0 |
| 1989 | 26 | 0 |
| 1990 | 14 | 0 |
| 1991 | 25 | 0 |
| 1992 | 33 | 0 |
| 1993 | 28 | 0 |
| 1994 | 32 | 0 |
| 1995 | 36 | 0 |
| 1996 | 20 | 0 |
| 1997 | 17 | 0 |
| 1998 | 31 | 0 |
| 1999 | 39 | 0 |
| 2000 | 27 | 0 |
| 2001 | 52 | 8 |
| 2002 | 33 | 37 |
| 2003 | 24 | 42 |
| 2004 | 23 | 57 |
| 2005 | 17 | 40 |
| 2006 | 31 | 46 |
| 2007 | 21 | 45 |
| 2008 | 15 | 42 |
| 2009 | 19 | 24 |
| 2010 | 31 | 46 |
| 2011 | 30 | 49 |
| 2012 | 32 | 61 |
| 2013 | 30 | 62 |
| 2014 | 43 | 73 |
| 2015 | 61 | 82 |
| 2016 | 63 | 77 |
| 2017 | 55 | 76 |
| 2018 | 69 | 77 |
| 2019 | 75 | 71 |
| 2020 | 55 | 81 |
| 2021 | 45 | 85 |
| 2022 | 41 | 93 |
| 2023 | 59 | 137 |
| 2024 | 59 | 133 |
| 2025 | 75 | 118 |
| 2026 | 69 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hybrid system and method of waste heat utilization-based photovoltaic power generation and seawater desalination6 Oct 2026US 12,752,240 B2Xi' An Jiaotong University
- Pure water production system and pure water production method29 Sep 2026US 12,747,171 B2Organo Corporation
- Purification of oligosaccharides from a fermentation broth by using filtration15 Sep 2026US 12,735,443 B2Chr. Hansen A/S
- Preparation method of milk oligosaccharides and oligosaccharide powder and food prepared thereby15 Sep 2026US 12,735,512 B2Beijing Sanyuan Foods Co., Ltd.
- System and method for capturing carbon dioxide from a humidity adjusted air stream1 Sep 2026US 12,722,118 B2
- Ion exchange membrane8 Oct 2026US 2026/0307020 A1Khalifa University of Science and Technology
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Systems and methods for lithium extraction from aqueous feedstocks1 Oct 2026US 2026/0295534 A1University of Utah Research Foundation
- High-efficiency method for producing lithium hydroxide from lithium carbonate through process improvement1 Oct 2026US 2026/0296907 A1Korea Institute of Geoscience and Mineral Resources
- Simultaneous production method of lithium hydroxide and sulfuric acid1 Oct 2026US 2026/0296908 A1Posco Holdings Inc.
Most cited
By later US patents
- Purification of saline water838US 4,036,749 A1977
- Electrodeionization apparatus202US 4,632,745 AMillipore Corporation · 1986
- Methods and systems for enhanced fluid transport202US 5,964,995 ACaliper Technologies Corp. · 1999
- Automatic flushing system for membrane separation machines such as reverse osmosis machines177US 3,992,301 ARaypak, Inc. · 1976
- Composite solid polymer electrolyte membranes158US 6,248,469 B1Foster-Miller, Inc. · 2001