C02F 1/48
Treatment of water, waste water, or sewage: with magnetic or electric fields
Official title: with magnetic or electric fields (C02F1/46 takes precedence)
C02F1/48 (Treatment of water, waste water, or sewage: with magnetic or electric fields) appears on 1,387 US grants and 1,492 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,387
- Published applications
- 1,492
- Assignees
- 875
- Inventors
- 2,884
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 6 | 0 |
| 1978 | 10 | 0 |
| 1979 | 9 | 0 |
| 1980 | 13 | 0 |
| 1981 | 14 | 0 |
| 1982 | 11 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 11 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 12 | 0 |
| 1989 | 19 | 0 |
| 1990 | 17 | 0 |
| 1991 | 17 | 0 |
| 1992 | 20 | 0 |
| 1993 | 21 | 0 |
| 1994 | 14 | 0 |
| 1995 | 19 | 0 |
| 1996 | 20 | 0 |
| 1997 | 29 | 0 |
| 1998 | 35 | 0 |
| 1999 | 29 | 0 |
| 2000 | 38 | 0 |
| 2001 | 36 | 10 |
| 2002 | 17 | 20 |
| 2003 | 23 | 38 |
| 2004 | 32 | 48 |
| 2005 | 21 | 45 |
| 2006 | 15 | 98 |
| 2007 | 26 | 52 |
| 2008 | 24 | 55 |
| 2009 | 32 | 53 |
| 2010 | 33 | 48 |
| 2011 | 36 | 44 |
| 2012 | 33 | 61 |
| 2013 | 42 | 67 |
| 2014 | 39 | 67 |
| 2015 | 40 | 78 |
| 2016 | 36 | 60 |
| 2017 | 47 | 70 |
| 2018 | 54 | 72 |
| 2019 | 55 | 86 |
| 2020 | 57 | 81 |
| 2021 | 50 | 69 |
| 2022 | 53 | 65 |
| 2023 | 41 | 65 |
| 2024 | 58 | 50 |
| 2025 | 46 | 59 |
| 2026 | 26 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oil-water mixture treatment device and method15 Sep 2026US 12,735,334 B2China Petroleum & Chemical Corporation
- Repelling magnet assembly25 Aug 2026US 12,714,873 B1
- Anoxic bioreactor treatment followed by pH adjusted peroxide/iron treatment for enhanced, efficient selenium removal in wastewaters25 Aug 2026US 12,715,802 B2Evoqua Water Technologies LLC
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Microwave waste heating system and related features21 Jul 2026US 12,690,098 B2A.L.M. Holding Company
- Anti-Fouling System1 Oct 2026US 2026/0296606 A1
- Water filtration assembly and method for electronics assembly24 Sep 2026US 2026/0285706 A1Haier US Appliance Solutions, Inc.
- Water filtration assembly and method for assembly24 Sep 2026US 2026/0285707 A1Haier US Appliance Solutions, Inc.
- Electrostatic purification device of fluid, fluid purification facility, and method of purifying fluid17 Sep 2026US 2026/0273545 A1Samsung Electronics Co., Ltd.
- Recirculating, purifying, disinfecting, cooling, decontaminating, decrystallizing feedback controlled water system for drinking water and other uses to improve health and well being of animals and humans3 Sep 2026US 2026/0257954 A1Wet Holdings (Global) Limited
Most cited
By later US patents
- Magnetic iron-dextran microspheres466US 4,452,773 ACanadian Patents and Development Limited · 1984
- Droplet transportation devices and methods having a fluid surface196US 7,547,380 B2North Carolina State University · 2009
- Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems152US 7,169,303 B2HemoCleanse Technologies LLC · 2007
- Method and apparatus for treating cooling tower water124US 4,764,283 A1988
- Method of an apparatus for sterilizing aqueous media, more particularly drinking water122US 4,857,204 A1989