C02F 2209/003
Downstream control, i.e. outlet monitoring
Official title: Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
C02F2209/003 (Downstream control, i.e. outlet monitoring) appears on 514 US grants and 844 published applications in this corpus.
Search patents in C02F- Granted patents
- 514
- Published applications
- 844
- Assignees
- 453
- Inventors
- 1,717
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 10 |
| 2003 | 9 | 8 |
| 2004 | 7 | 11 |
| 2005 | 4 | 17 |
| 2006 | 5 | 17 |
| 2007 | 4 | 17 |
| 2008 | 8 | 19 |
| 2009 | 13 | 23 |
| 2010 | 16 | 34 |
| 2011 | 13 | 34 |
| 2012 | 12 | 22 |
| 2013 | 16 | 40 |
| 2014 | 19 | 39 |
| 2015 | 16 | 42 |
| 2016 | 21 | 37 |
| 2017 | 23 | 46 |
| 2018 | 30 | 39 |
| 2019 | 28 | 62 |
| 2020 | 48 | 41 |
| 2021 | 36 | 44 |
| 2022 | 43 | 52 |
| 2023 | 33 | 53 |
| 2024 | 38 | 41 |
| 2025 | 30 | 50 |
| 2026 | 23 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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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
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes157US 5,425,858 AThe Regents of the University of California · 1995
- Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes139US 6,309,532 B1The Regents of the University of California · 2001
- Method for remote monitoring of water treatment systems130US 6,954,701 B2Watereye, Inc. · 2005