C02F 1/469
By electrochemical separation
Official title: by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
C02F1/469 (By electrochemical separation) appears on 1,378 US grants and 1,847 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,378
- Published applications
- 1,847
- Assignees
- 822
- Inventors
- 3,475
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 7 | 0 |
| 1993 | 12 | 0 |
| 1994 | 11 | 0 |
| 1995 | 12 | 0 |
| 1996 | 17 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 24 | 0 |
| 2000 | 24 | 0 |
| 2001 | 37 | 4 |
| 2002 | 28 | 21 |
| 2003 | 18 | 34 |
| 2004 | 26 | 46 |
| 2005 | 6 | 43 |
| 2006 | 22 | 39 |
| 2007 | 18 | 36 |
| 2008 | 19 | 45 |
| 2009 | 17 | 43 |
| 2010 | 30 | 52 |
| 2011 | 24 | 65 |
| 2012 | 33 | 64 |
| 2013 | 40 | 80 |
| 2014 | 51 | 92 |
| 2015 | 61 | 104 |
| 2016 | 56 | 101 |
| 2017 | 65 | 66 |
| 2018 | 66 | 79 |
| 2019 | 90 | 88 |
| 2020 | 70 | 83 |
| 2021 | 47 | 97 |
| 2022 | 51 | 113 |
| 2023 | 74 | 137 |
| 2024 | 77 | 113 |
| 2025 | 77 | 110 |
| 2026 | 59 | 92 |
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
- Ion exchange membrane composition and methods for the concentration of perfluoroalkyl substances29 Sep 2026US 12,747,172 B2Evoqua Water Technologies LLC
- Chlorine tolerance of continuous electrodeionization modules1 Sep 2026US 12,722,121 B2Evoqua Water Technologies LLC
- Soft-water system25 Aug 2026US 12,715,795 B2Kyungdong Navien Co., Ltd.
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Conductive hollow fiber membrane and preparation method thereof and membrane assembly24 Sep 2026US 2026/0284601 A1Cangzhou Institute of Tiangong University
- Hybrid electrodialysis and electrolysis systems and processes24 Sep 2026US 2026/0285728 A1Pani Clean, Inc.
- Electrostatic purification device of fluid, fluid purification facility, and method of purifying fluid17 Sep 2026US 2026/0273545 A1Samsung Electronics Co., Ltd.
- Electrodialyzer and Electrodialysis System for CO2 Capture from Ocean Water17 Sep 2026US 2026/0274718 A1California Institute of Technology
Most cited
By later US patents
- Electrodeionization apparatus202US 4,632,745 AMillipore Corporation · 1986
- Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes157US 5,425,858 AThe Regents of the University of California · 1995
- Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack155US 5,066,375 AIonics, Incorporated · 1991
- Water treatment method for heavy oil production150US 6,733,636 B1Ionics, Incorporated · 2004
- Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions146US 4,687,561 A1987