C02F 1/72
Treatment of water, waste water, or sewage: by oxidation
Official title: by oxidation {(C02F1/4672 takes precedence)}
C02F1/72 (Treatment of water, waste water, or sewage: by oxidation) appears on 6,478 US grants and 6,695 published applications in this corpus.
Search patents in C02F- Granted patents
- 6,478
- Published applications
- 6,695
- Assignees
- 3,552
- Inventors
- 13,483
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 36 | 0 |
| 1977 | 53 | 0 |
| 1978 | 49 | 0 |
| 1979 | 33 | 0 |
| 1980 | 48 | 0 |
| 1981 | 56 | 0 |
| 1982 | 37 | 0 |
| 1983 | 34 | 0 |
| 1984 | 32 | 0 |
| 1985 | 30 | 0 |
| 1986 | 40 | 0 |
| 1987 | 43 | 0 |
| 1988 | 46 | 0 |
| 1989 | 67 | 0 |
| 1990 | 67 | 0 |
| 1991 | 88 | 0 |
| 1992 | 95 | 0 |
| 1993 | 92 | 0 |
| 1994 | 92 | 0 |
| 1995 | 120 | 0 |
| 1996 | 110 | 0 |
| 1997 | 96 | 0 |
| 1998 | 112 | 0 |
| 1999 | 123 | 0 |
| 2000 | 167 | 0 |
| 2001 | 180 | 46 |
| 2002 | 160 | 193 |
| 2003 | 165 | 224 |
| 2004 | 133 | 207 |
| 2005 | 136 | 255 |
| 2006 | 144 | 259 |
| 2007 | 130 | 201 |
| 2008 | 124 | 240 |
| 2009 | 126 | 241 |
| 2010 | 156 | 259 |
| 2011 | 142 | 237 |
| 2012 | 111 | 260 |
| 2013 | 173 | 300 |
| 2014 | 170 | 324 |
| 2015 | 183 | 297 |
| 2016 | 200 | 274 |
| 2017 | 210 | 280 |
| 2018 | 213 | 272 |
| 2019 | 245 | 327 |
| 2020 | 281 | 315 |
| 2021 | 274 | 329 |
| 2022 | 238 | 304 |
| 2023 | 230 | 306 |
| 2024 | 213 | 270 |
| 2025 | 236 | 273 |
| 2026 | 139 | 202 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water treatment apparatus and water treatment method6 Oct 2026US 12,753,097 B2Organo Corporation
- System and method for processing a slurry29 Sep 2026US 12,747,645 B2Flowback Fluids LLC
- Catalytic oxidation reactor and complete set of equipment22 Sep 2026US 12,741,893 B2Shanghai Municipal Engineering Design Institute (Group) Co., Ltd.
- Method for treating wastewater15 Sep 2026US 12,735,337 B2Mitsubishi Chemical Corporation
- Water treatment method and water treatment agent composition8 Sep 2026US 12,728,390 B2Organo Corporation
- Systems and methods for removing aqueous disinfectants using zero-valent iron media8 Oct 2026US 2026/0308028 A1Pentair, Inc.
- Water treatment method and water treatment device8 Oct 2026US 2026/0308029 A1Organo Corporation
- Water treatment apparatus and water treatment method8 Oct 2026US 2026/0308036 A1Meidensha Corporation
- Method for degradation of pfas based on sonocatalysis1 Oct 2026US 2026/0296932 A1Schlumberger Technology Corporation
- Water treatment system, pure water production method, and water treatment method1 Oct 2026US 2026/0296933 A1Organo Corporation
Most cited
By later US patents
- Methods and systems for improved dosing of a chemical treatment, such as chlorine dioxide, into a fluid stream, such as a wastewater stream595US 6,949,196 B2Fkos, LLC · 2005
- Electrochemical production of ozone and hydrogen peroxide465US 5,972,196 ALynntech, Inc. · 1999
- Apparatus and method of purifying water with ozone370US 6,673,248 B2S C Trade & Consult AB · 2004
- Electrochemical synthesis of hydrogen peroxide366US 6,712,949 B2The Electrosynthesis Company, Inc. · 2004
- Simplified ozonator for a semiconductor wafer cleaner350US 6,399,022 B1Fairchild Semiconductor Corporation · 2002