B01D 61/422
Electrodialysis
Official title: {Electrodialysis}
B01D61/422 (Electrodialysis) appears on 282 US grants and 404 published applications in this corpus.
Search patents in B01D- Granted patents
- 282
- Published applications
- 404
- Assignees
- 269
- Inventors
- 956
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 2 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 4 |
| 2005 | 0 | 3 |
| 2006 | 1 | 7 |
| 2007 | 2 | 5 |
| 2008 | 1 | 10 |
| 2009 | 3 | 2 |
| 2010 | 4 | 10 |
| 2011 | 5 | 6 |
| 2012 | 8 | 18 |
| 2013 | 5 | 9 |
| 2014 | 11 | 9 |
| 2015 | 15 | 14 |
| 2016 | 11 | 14 |
| 2017 | 11 | 19 |
| 2018 | 16 | 25 |
| 2019 | 15 | 25 |
| 2020 | 16 | 26 |
| 2021 | 16 | 29 |
| 2022 | 15 | 34 |
| 2023 | 19 | 36 |
| 2024 | 17 | 34 |
| 2025 | 19 | 32 |
| 2026 | 20 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Compositions and systems for selective lithium leaching and related methods18 Aug 2026US 12,709,785 B2American Battery Technology Company
- Method of purifying helium from mixed gas28 Jul 2026US 12,691,408 B2Skyre, Inc.
- Hybrid electrodialysis and electrolysis systems and processes23 Jun 2026US 12,662,401 B2Pani Clean, Inc.
- Systems and methods for lithium extraction from aqueous feedstocks1 Oct 2026US 2026/0295534 A1University of Utah Research Foundation
- Method for the bonding, transport, reaction activation, conversion, storage and release of water-soluble gases17 Sep 2026US 2026/0273453 A1
- Electrodialyzer and Electrodialysis System for CO2 Capture from Ocean Water17 Sep 2026US 2026/0274718 A1California Institute of Technology
- Method for manufacturing lithium hydroxide20 Aug 2026US 2026/0242229 A1Idemitsu Kosan Co., Ltd.
- Processes for preparing hydroxides and oxides of various metals and derivatives thereof13 Aug 2026US 2026/0234024 A1Nemaska Lithium Inc.
Most cited
By later US patents
- Purification of saline water838US 4,036,749 A1977
- Water purification process117US 4,808,287 A1989
- Method of and apparatus for producing potable water and salt95US 6,030,535 AYukiko Hayashi · 2000
- Production of purified water and high value chemicals from salt water85US 7,083,730 B2University of South Carolina · 2006
- Electrodialysis including filled cell electrodialysis (electrodeionization)72US 5,503,729 AIonics, Incorporated · 1996