C02F 2201/4617
Dc only
Official title: DC only
C02F2201/4617 (Dc only) appears on 283 US grants and 367 published applications in this corpus.
Search patents in C02F- Granted patents
- 283
- Published applications
- 367
- Assignees
- 277
- Inventors
- 884
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 11 | 0 |
| 2002 | 10 | 8 |
| 2003 | 7 | 13 |
| 2004 | 6 | 8 |
| 2005 | 5 | 6 |
| 2006 | 5 | 9 |
| 2007 | 2 | 14 |
| 2008 | 3 | 12 |
| 2009 | 3 | 29 |
| 2010 | 11 | 27 |
| 2011 | 7 | 21 |
| 2012 | 18 | 12 |
| 2013 | 11 | 22 |
| 2014 | 14 | 13 |
| 2015 | 11 | 22 |
| 2016 | 14 | 9 |
| 2017 | 6 | 13 |
| 2018 | 7 | 12 |
| 2019 | 13 | 12 |
| 2020 | 11 | 17 |
| 2021 | 9 | 16 |
| 2022 | 7 | 21 |
| 2023 | 9 | 20 |
| 2024 | 6 | 13 |
| 2025 | 5 | 9 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Waste water treatment process6 Oct 2026US 12,753,095 B2U.S. Clean Water Technology, Inc.
- Method and kit for remediation of environments contaminated with halogenated organic compounds15 Sep 2026US 12,734,568 B2Photon Remediation Technology N.V.
- Processes for treatment of residuals28 Jul 2026US 12,692,182 B2Université Concordia
- Electro-activated super oxidized water and method of synthesizing the same16 Jun 2026US 12,655,044 B2Bactiguard AB
- Method for selectively removing perfluorinated compounds with electrooxidation26 May 2026US 12,637,369 B2SK hynix Inc.
- Electrolytic ion water generation device24 Sep 2026US 2026/0285715 A1E-Plan, Inc.
- Hybrid electrodialysis and electrolysis systems and processes24 Sep 2026US 2026/0285728 A1Pani Clean, Inc.
- Electrolytic cells, treatment of water, and methods of use27 Aug 2026US 2026/0250862 A1Electro-Aeration, Inc.
- Electro-activated super oxidized water and method of synthesizing the same25 Jun 2026US 2026/0176174 A1Bactiguard AB
- Chlorinator synchronous rectification18 Jun 2026US 2026/0167532 A1Fluidra Group Australia Pty Ltd.
Most cited
By later US patents
- Strong acid sterilizing liquid containing hypochlorous acid at a low concentration, method and apparatus for generating same, and apparatus for generating and dispensing same104US 5,858,201 AToto Ltd. · 1999
- Amperometric halogen control system68US 6,238,555 B1BioQuest · 2001
- Device for purifying and dispensing water65US 5,928,505 AMatsushita Electric Works, Ltd. · 1999
- Chlorine gas generator apparatus61US 4,290,873 A1981
- Amperometric sensor probe for an automatic halogen control system58US 6,270,680 B1BioQuest · 2001