C02F 1/46
Treatment of water, waste water, or sewage: by electrochemical methods
Official title: by electrochemical methods
C02F1/46 (Treatment of water, waste water, or sewage: by electrochemical methods) appears on 5,042 US grants and 6,202 published applications in this corpus.
Search patents in C02F- Granted patents
- 5,042
- Published applications
- 6,202
- Assignees
- 2,881
- Inventors
- 11,457
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 49 | 0 |
| 1977 | 49 | 0 |
| 1978 | 54 | 0 |
| 1979 | 29 | 0 |
| 1980 | 43 | 0 |
| 1981 | 46 | 0 |
| 1982 | 42 | 0 |
| 1983 | 27 | 0 |
| 1984 | 24 | 0 |
| 1985 | 29 | 0 |
| 1986 | 17 | 0 |
| 1987 | 35 | 0 |
| 1988 | 42 | 0 |
| 1989 | 31 | 0 |
| 1990 | 35 | 0 |
| 1991 | 47 | 0 |
| 1992 | 32 | 0 |
| 1993 | 46 | 0 |
| 1994 | 65 | 0 |
| 1995 | 63 | 0 |
| 1996 | 54 | 0 |
| 1997 | 69 | 0 |
| 1998 | 92 | 0 |
| 1999 | 122 | 0 |
| 2000 | 99 | 0 |
| 2001 | 140 | 18 |
| 2002 | 95 | 121 |
| 2003 | 99 | 153 |
| 2004 | 99 | 160 |
| 2005 | 70 | 149 |
| 2006 | 64 | 200 |
| 2007 | 72 | 133 |
| 2008 | 69 | 168 |
| 2009 | 62 | 194 |
| 2010 | 116 | 214 |
| 2011 | 98 | 254 |
| 2012 | 128 | 228 |
| 2013 | 151 | 258 |
| 2014 | 148 | 277 |
| 2015 | 156 | 304 |
| 2016 | 165 | 290 |
| 2017 | 175 | 274 |
| 2018 | 211 | 291 |
| 2019 | 246 | 297 |
| 2020 | 220 | 305 |
| 2021 | 196 | 309 |
| 2022 | 197 | 340 |
| 2023 | 231 | 360 |
| 2024 | 214 | 342 |
| 2025 | 225 | 324 |
| 2026 | 154 | 239 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C02F 1/461By electrolysis3,737
- C02F 1/469By electrochemical separation1,378
- C02F 1/4608Using electrical discharges352
- C02F 1/4602For prevention or elimination of deposits225
- C02F 1/4604For desalination of seawater or brackish water216
- C02F 1/4606For producing oligodynamic substances to disinfect the water191
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
- Waste water treatment process6 Oct 2026US 12,753,095 B2U.S. Clean Water Technology, Inc.
- Flow features for self-cleaning concentric tubular electrochemical cells6 Oct 2026US 12,753,096 B2Evoqua Water Technologies LLC
- 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
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Electrochemical cell8 Oct 2026US 2026/0308024 A1Imperial College Innovations Limited
- Water treatment apparatus and water treatment method8 Oct 2026US 2026/0308036 A1Meidensha Corporation
- Integrated Ocean Alkalinity Enhancement And Seawater Desalination8 Oct 2026US 2026/0308037 A1Ebb Carbon, Inc.
- Materials, panels and uses thereof8 Oct 2026US 2026/0308784 A1B. G. Negev Technologies and Applications Ltd., At Ben-Gurion University
Most cited
By later US patents
- Electrochemical production of ozone and hydrogen peroxide465US 5,972,196 ALynntech, Inc. · 1999
- Electrochemical synthesis of hydrogen peroxide366US 6,712,949 B2The Electrosynthesis Company, Inc. · 2004
- 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