C02F 2303/18
Removal of treatment agents after treatment
C02F2303/18 (Removal of treatment agents after treatment) appears on 619 US grants and 811 published applications in this corpus.
Search patents in C02F- Granted patents
- 619
- Published applications
- 811
- Assignees
- 502
- Inventors
- 1,721
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 3 |
| 2002 | 5 | 7 |
| 2003 | 14 | 25 |
| 2004 | 13 | 19 |
| 2005 | 12 | 25 |
| 2006 | 12 | 11 |
| 2007 | 9 | 15 |
| 2008 | 8 | 23 |
| 2009 | 9 | 15 |
| 2010 | 10 | 17 |
| 2011 | 15 | 23 |
| 2012 | 10 | 26 |
| 2013 | 9 | 36 |
| 2014 | 14 | 31 |
| 2015 | 16 | 49 |
| 2016 | 26 | 39 |
| 2017 | 27 | 48 |
| 2018 | 30 | 37 |
| 2019 | 33 | 44 |
| 2020 | 40 | 59 |
| 2021 | 45 | 54 |
| 2022 | 28 | 45 |
| 2023 | 39 | 57 |
| 2024 | 35 | 40 |
| 2025 | 37 | 32 |
| 2026 | 24 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for desalination of liquids22 Sep 2026US 12,741,888 B2Acquolina Il Mondo, LLC
- Floculant formulation based on chitosan compatible with disinfection products and method of preparation8 Sep 2026US 12,729,142 B2Industrias Vepinsa, S.A. de C.V.
- Continuous in-situ therapeutic treatment system for fish in freshwater, from seawater4 Aug 2026US 12,696,881 B2Salmoclinic Spa
- Composition with shell and core for removal of ionic contaminants30 Jun 2026US 12,668,511 B2Uop LLC
- Processes and systems for de-watering sludge2 Jun 2026US 12,643,807 B2NewSouth Innovations Pty Limited
- Systems and methods for removing aqueous disinfectants using zero-valent iron media8 Oct 2026US 2026/0308028 A1Pentair, Inc.
- Method for Complete Sulfate and Metal Removal from Produced Water Using a Three-Step Treatment Process for Reinjection8 Oct 2026US 2026/0308034 A1Molecular Filtration, Inc.
- Water treatment system, pure water production method, and water treatment method1 Oct 2026US 2026/0296933 A1Organo Corporation
- High-efficiency advanced oxidation process system and method for reducing disinfection by-products in swimming pool water17 Sep 2026US 2026/0274721 A1Tequa-Top Ltd
- Powdered adsorbent lossless recovery method based on belt filter10 Sep 2026US 2026/0263973 A1Zhejiang Yongzheng Lithium Technology Co., Ltd.
Most cited
By later US patents
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- System and method for detecting time-bomb malware168US 9,536,091 B2FireEye, Inc. · 2017
- Personal water filter bottle system161US 6,569,329 B1Innova Pure Water Inc. · 2003
- System and method for detecting time-bomb malware153US 10,083,302 B1FireEye, Inc. · 2018
- Self-contained water treatment system152US 5,269,919 A1993