C02F 2201/00
Apparatus for treatment of water, waste water or sewage
C02F2201/00 (Apparatus for treatment of water, waste water or sewage) appears on 8,195 US grants and 10,489 published applications in this corpus.
Search patents in C02F- Granted patents
- 8,195
- Published applications
- 10,489
- Assignees
- 4,514
- Inventors
- 18,013
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 39 | 0 |
| 1978 | 47 | 0 |
| 1979 | 26 | 0 |
| 1980 | 28 | 0 |
| 1981 | 44 | 0 |
| 1982 | 26 | 0 |
| 1983 | 27 | 0 |
| 1984 | 20 | 0 |
| 1985 | 20 | 0 |
| 1986 | 24 | 0 |
| 1987 | 38 | 0 |
| 1988 | 50 | 0 |
| 1989 | 42 | 0 |
| 1990 | 49 | 0 |
| 1991 | 60 | 0 |
| 1992 | 57 | 0 |
| 1993 | 48 | 0 |
| 1994 | 76 | 0 |
| 1995 | 83 | 0 |
| 1996 | 85 | 0 |
| 1997 | 98 | 0 |
| 1998 | 98 | 0 |
| 1999 | 139 | 0 |
| 2000 | 111 | 0 |
| 2001 | 162 | 29 |
| 2002 | 147 | 161 |
| 2003 | 145 | 224 |
| 2004 | 128 | 210 |
| 2005 | 103 | 231 |
| 2006 | 113 | 237 |
| 2007 | 105 | 227 |
| 2008 | 118 | 265 |
| 2009 | 123 | 264 |
| 2010 | 172 | 311 |
| 2011 | 147 | 367 |
| 2012 | 193 | 319 |
| 2013 | 201 | 361 |
| 2014 | 240 | 414 |
| 2015 | 251 | 477 |
| 2016 | 255 | 474 |
| 2017 | 321 | 504 |
| 2018 | 386 | 533 |
| 2019 | 455 | 619 |
| 2020 | 508 | 640 |
| 2021 | 463 | 633 |
| 2022 | 465 | 680 |
| 2023 | 439 | 632 |
| 2024 | 431 | 604 |
| 2025 | 455 | 587 |
| 2026 | 301 | 486 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C02F 2201/002Construction details of the apparatusIndexing code3,118
- C02F 2201/46Apparatus for electrochemical processesIndexing code2,410
- C02F 2201/32Details relating to uv-irradiation devicesIndexing code1,466
- C02F 2201/008Mobile apparatus and plantsIndexing code948
- C02F 2201/009Apparatus with independent power supplyIndexing code679
- C02F 2201/78Details relating to ozone treatment devicesIndexing code566
- C02F 2201/48Devices for applying magnetic or electric fieldsIndexing code258
- C02F 2201/001Build in apparatus for autonomous on board water supply and wastewater treatmentIndexing code200
Recent patents
- Hybrid system and method of waste heat utilization-based photovoltaic power generation and seawater desalination6 Oct 2026US 12,752,240 B2Xi' An Jiaotong University
- Composite filter and water purifier including same6 Oct 2026US 12,753,091 B2Coway Co., Ltd.
- Structure and apparatus for purifying and containing high clarity water used for direct contact recreational purposes6 Oct 2026US 12,753,094 B2Crystal Lagoons Technologies, Inc.
- Waste water treatment process6 Oct 2026US 12,753,095 B2U.S. Clean Water Technology, Inc.
- Flow features for self-cleaning concentric tubular electrochemical cells6 Oct 2026US 12,753,096 B2Evoqua Water Technologies LLC
- Equipment and method for removing a supernatant phase from a body of water in a polluted groundwater8 Oct 2026US 2026/0307123 A1ENI S. p. A.
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Self-managed water purifier8 Oct 2026US 2026/0308016 A1Coway Co., Ltd.
- Sterilizing apparatus8 Oct 2026US 2026/0308021 A1Seoul Visoys Co., Ltd.
- Apparatus and method for waste-water reduction in laboratory water purification system8 Oct 2026US 2026/0308022 A1Thermo Orion Inc.
Most cited
By later US patents
- UV-emitting phosphor and lamp containing same525US 7,396,491 B2Osram Sylvania Inc. · 2008
- Electrochemical production of ozone and hydrogen peroxide465US 5,972,196 ALynntech, Inc. · 1999
- Inductively coupled ballast circuit436US 6,825,620 B2Access Business Group International LLC · 2004
- Water treatment system with an inductively coupled ballast432US 6,436,299 B1Amway Corporation · 2002
- Inductively powered lamp assembly370US 6,731,071 B2Access Business Group International LLC · 2004