C02F 2201/48
Devices for applying magnetic or electric fields
C02F2201/48 (Devices for applying magnetic or electric fields) appears on 258 US grants and 339 published applications in this corpus.
Search patents in C02F- Granted patents
- 258
- Published applications
- 339
- Assignees
- 162
- Inventors
- 477
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 3 |
| 2003 | 4 | 6 |
| 2004 | 10 | 13 |
| 2005 | 2 | 8 |
| 2006 | 5 | 43 |
| 2007 | 6 | 8 |
| 2008 | 4 | 6 |
| 2009 | 6 | 7 |
| 2010 | 2 | 9 |
| 2011 | 8 | 6 |
| 2012 | 3 | 12 |
| 2013 | 3 | 7 |
| 2014 | 5 | 16 |
| 2015 | 8 | 26 |
| 2016 | 13 | 17 |
| 2017 | 16 | 23 |
| 2018 | 12 | 21 |
| 2019 | 16 | 28 |
| 2020 | 21 | 17 |
| 2021 | 17 | 15 |
| 2022 | 19 | 8 |
| 2023 | 14 | 15 |
| 2024 | 16 | 15 |
| 2025 | 6 | 8 |
| 2026 | 7 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for desalination of liquids22 Sep 2026US 12,741,888 B2Acquolina Il Mondo, LLC
- Oil-water mixture treatment device and method15 Sep 2026US 12,735,334 B2China Petroleum & Chemical Corporation
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Streaming current monitor12 May 2026US 12,624,980 B2Dbg IP Limited
- Multi-stage apparatus for producing magnetized water14 Apr 2026US 12,600,650 B2
- Device and method for imprinting an active effect of at least one reference product into a treatment product16 Jul 2026US 2026/0204365 A1Aequilliving Inc Limited
- Water treatment device capable of selective recovery of specific magnetic filter layers11 Jun 2026US 2026/0159417 A1Daegu Gyeongbuk Institute of Science and Technology
- Streaming Current Monitor25 Dec 2025US 2025/0389568 A1Dbg IP Limited
- Systems and methods for desalination of liquids25 Sep 2025US 2025/0296856 A1Acquolina Il Mondo, LLC
- EMF Generator To Selectively Tune the Generated EMF to Specific Frequencies Using a Pulse-width Modulator and Methods Related Thereto11 Sep 2025US 2025/0282658 A1Cirrus Ecowater, LLC
Most cited
By later US patents
- Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems152US 7,169,303 B2HemoCleanse Technologies LLC · 2007
- Apparatus for treating liquid to prevent and/or remove scale deposits75US 5,074,998 A1991
- UV apparatus for fluid treatment69US 5,675,153 A1997
- Apparatus for treating flowing liquid with electromagnetic flux51US 6,063,267 AClearwater Systems Corporation · 2000
- Method and apparatus for magnetically treating a liquid43US 4,938,875 A1990