C02F 2303/14
Maintenance of water treatment installations
C02F2303/14 (Maintenance of water treatment installations) appears on 260 US grants and 451 published applications in this corpus.
Search patents in C02F- Granted patents
- 260
- Published applications
- 451
- Assignees
- 276
- Inventors
- 964
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 5 |
| 2006 | 2 | 5 |
| 2007 | 2 | 4 |
| 2008 | 2 | 19 |
| 2009 | 3 | 7 |
| 2010 | 10 | 14 |
| 2011 | 10 | 15 |
| 2012 | 6 | 11 |
| 2013 | 7 | 14 |
| 2014 | 7 | 15 |
| 2015 | 13 | 21 |
| 2016 | 11 | 26 |
| 2017 | 13 | 18 |
| 2018 | 11 | 16 |
| 2019 | 14 | 17 |
| 2020 | 16 | 30 |
| 2021 | 14 | 31 |
| 2022 | 17 | 39 |
| 2023 | 26 | 56 |
| 2024 | 27 | 35 |
| 2025 | 23 | 22 |
| 2026 | 19 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Underdrain for media vessel and method of cleaning18 Aug 2026US 12,708,934 B2Bl Technologies, Inc.
- Anaerobic digester with self-delivery of accumulated solids16 Jun 2026US 12,655,048 B2Virginia Tech Intellectual Properties, Inc.
- Application of surfmers to mitigate fouling in olefins plants5 May 2026US 12,618,017 B2Sabic Global Technologies B.V.
- Thermal disinfection system for a medical apparatus28 Apr 2026US 12,611,494 B2Gambro Lundia AB
- Water treatment method and water treatment apparatus1 Oct 2026US 2026/0296934 A1Organo Corporation
- Cleaning method of membrane housing, membrane housing cleaned by the cleaning method, and ultrapure water manufacturing apparatus including the membrane housing17 Sep 2026US 2026/0273471 A1Organo Corporation
- Determination apparatus, determination method, determination program, and water treatment system17 Sep 2026US 2026/0273472 A1Yokogawa Electric Corporation
- Tank cleaning system17 Sep 2026US 2026/0273595 A1
- Stormwater management system for urban storage and recovery13 Aug 2026US 2026/0234042 A1
Most cited
By later US patents
- Apparatus and methods for monitoring water consumption and filter usage88US 7,107,838 B2Fook Tin Technologies Ltd. · 2006
- Water treatment system combining ozone injection and monitoring apparatuses61US 6,685,825 B1Senno Technology Inc. · 2004
- Sewer and catch basin cleaner56US 4,134,174 ASuper Products Corporation · 1979
- Ocean depth reverse osmosis fresh water factory49US 5,229,005 A1993
- Cleaning compositions with water insoluble conversion agents and methods of making and using them31US 8,071,528 B2Ecolab USA Inc. · 2011