C02F 2201/483
Using coils
Official title: using coils
C02F2201/483 (Using coils) appears on 158 US grants and 212 published applications in this corpus.
Search patents in C02F- Granted patents
- 158
- Published applications
- 212
- Assignees
- 89
- Inventors
- 239
- Latest grant
- 4 Aug 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 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 6 |
| 2004 | 9 | 7 |
| 2005 | 1 | 7 |
| 2006 | 4 | 42 |
| 2007 | 4 | 8 |
| 2008 | 3 | 5 |
| 2009 | 6 | 6 |
| 2010 | 2 | 8 |
| 2011 | 7 | 4 |
| 2012 | 2 | 11 |
| 2013 | 3 | 6 |
| 2014 | 4 | 11 |
| 2015 | 5 | 6 |
| 2016 | 8 | 8 |
| 2017 | 6 | 11 |
| 2018 | 4 | 13 |
| 2019 | 9 | 13 |
| 2020 | 12 | 9 |
| 2021 | 10 | 9 |
| 2022 | 11 | 4 |
| 2023 | 5 | 5 |
| 2024 | 5 | 6 |
| 2025 | 3 | 5 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Streaming current monitor12 May 2026US 12,624,980 B2Dbg IP Limited
- Versatile physicochemical water treatment system and method2 Dec 2025US 12,486,188 B1International Medical Consultants, Inc.
- Method and system for treating irrigation water2 Sep 2025US 12,402,578 B2Flow-Tech Systems, LLC
- Magnetization control apparatus for preventing clogging of drip irrigation system irrigator and control method thereof26 Aug 2025US 12,398,049 B2China Agricultural University
- Streaming Current Monitor25 Dec 2025US 2025/0389568 A1Dbg IP Limited
- 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
- Method and system for methane reduction in water bodies31 Jul 2025US 2025/0243094 A1
- Apparatuses and methods for treating, purifying and/or extracting from wastewater13 Feb 2025US 2025/0051193 A1FisherH2O, LLC
- Methods and systems for removing contaminants and nutrients from a fluid13 Feb 2025US 2025/0051195 A1City of Essex Junction
Most cited
By later US patents
- Apparatus for treating liquid to prevent and/or remove scale deposits75US 5,074,998 A1991
- 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
- Electronic lime controller with controls responsive to flow rates and water hardness41US 5,171,431 A1992
- Current driver for electronic descaling38US 5,725,778 ADrexel University · 1998