C02F 1/4608
Using electrical discharges
Official title: {using electrical discharges}
C02F1/4608 (Using electrical discharges) appears on 352 US grants and 432 published applications in this corpus.
Search patents in C02F- Granted patents
- 352
- Published applications
- 432
- Assignees
- 232
- Inventors
- 835
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 5 | 4 |
| 2003 | 5 | 6 |
| 2004 | 6 | 12 |
| 2005 | 2 | 3 |
| 2006 | 2 | 7 |
| 2007 | 7 | 7 |
| 2008 | 5 | 9 |
| 2009 | 3 | 14 |
| 2010 | 8 | 13 |
| 2011 | 8 | 18 |
| 2012 | 11 | 15 |
| 2013 | 18 | 13 |
| 2014 | 11 | 19 |
| 2015 | 7 | 25 |
| 2016 | 13 | 24 |
| 2017 | 21 | 32 |
| 2018 | 20 | 32 |
| 2019 | 22 | 25 |
| 2020 | 29 | 29 |
| 2021 | 23 | 24 |
| 2022 | 18 | 18 |
| 2023 | 22 | 29 |
| 2024 | 14 | 18 |
| 2025 | 17 | 19 |
| 2026 | 10 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Continuous and rapid perpetual electrostatic coalescence phase separation and demulsification of oil, water, and solids using plasma at standard conditions1 Sep 2026US 12,722,102 B2Lteoil LLC
- Fluid recycling unit for aircraft11 Aug 2026US 12,703,648 B2MAG Aerospace Industries, LLC
- Systems and methods of targeted entity degredation21 Jul 2026US 12,685,797 B1
- Plasma activated fluid processing system21 Jul 2026US 12,690,117 B2VitalFluid B.V.
- Plasma-enabled liquid filtration and decontamination23 Jun 2026US 12,662,400 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Water treatment apparatus and water treatment method8 Oct 2026US 2026/0308036 A1Meidensha Corporation
- Plasma-enabled Liquid Filtration and Decontamination17 Sep 2026US 2026/0274716 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Pulsed corona discharge-driven water treatment with improved energy efficiency10 Sep 2026US 2026/0265088 A1Fidchem, S.L.
- Method for plasma treatment of a mixture of at least two liquid phases for the separation of the two liquid phases of the mixture13 Aug 2026US 2026/0234035 A1
- High-voltage printed circuit board with integrated plasma discharge electrodes for scalable plasma-based water treatment systems13 Aug 2026US 2026/0239528 A1Black Spark Inc
Most cited
By later US patents
- Sterilization of liquids using plasma glow discharge132US 5,876,663 AThe University of Tennessee Research Corporation · 1999
- High pulsed voltage systems for extending the shelf life of pumpable food products119US 5,048,404 AFoodco Corporation · 1991
- Corona source for producing corona discharge and fluid waste treatment with corona discharge107US 5,655,210 AHughes Aircraft Company · 1997
- Methods and apparatus for extending the shelf life of fluid food products81US 4,695,472 AMaxwell Laboratories, Inc. · 1987
- Water treatment apparatus using plasma reactor and method thereof71US 6,228,266 B1LG Industrial Systems Co., Ltd. · 2001