C02F 2209/29
Chlorine compounds
C02F2209/29 (Chlorine compounds) appears on 336 US grants and 512 published applications in this corpus.
Search patents in C02F- Granted patents
- 336
- Published applications
- 512
- Assignees
- 269
- Inventors
- 998
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 6 |
| 2002 | 5 | 7 |
| 2003 | 7 | 10 |
| 2004 | 6 | 14 |
| 2005 | 8 | 17 |
| 2006 | 9 | 11 |
| 2007 | 6 | 10 |
| 2008 | 6 | 10 |
| 2009 | 6 | 20 |
| 2010 | 6 | 13 |
| 2011 | 8 | 19 |
| 2012 | 8 | 15 |
| 2013 | 10 | 23 |
| 2014 | 7 | 27 |
| 2015 | 14 | 25 |
| 2016 | 14 | 21 |
| 2017 | 17 | 14 |
| 2018 | 15 | 23 |
| 2019 | 21 | 28 |
| 2020 | 18 | 35 |
| 2021 | 30 | 26 |
| 2022 | 20 | 24 |
| 2023 | 23 | 29 |
| 2024 | 20 | 29 |
| 2025 | 19 | 27 |
| 2026 | 11 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water sanitization device, system and method1 Sep 2026US 12,722,991 B2Waterco Limited
- System and a method for changing color of pool lights11 Aug 2026US 12,705,960 B2Pentair Water Pool and Spa, Inc.
- System and method for controlling remediation cycles for the treatment of aquatic facility water7 Jul 2026US 12,673,880 B2Truox, Inc.
- Method for optical activation of the sensor surface, in particular for zero chlorine sensors16 Jun 2026US 12,655,038 B2ProMinent GmbH
- Amperometric sensor with bubble shedding clip16 Jun 2026US 12,656,292 B2Rosemount Inc.
- Systems and methods for removing aqueous disinfectants using zero-valent iron media8 Oct 2026US 2026/0308028 A1Pentair, Inc.
- Water treatment apparatus and water treatment method24 Sep 2026US 2026/0285720 A1Organo Corporation
- Container and water treatment system20 Aug 2026US 2026/0241342 A1Yokogawa Electric Corporation
- Pool system with free chlorine electrochemical sensor with ph control20 Aug 2026US 2026/0242245 A1Zodiac Pool Systems LLC
- Control device, control method, and control program20 Aug 2026US 2026/0242254 A1Yokogawa Electric 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
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- Swimming pool management system146US 6,125,481 A2000
- Method for remote monitoring of water treatment systems130US 6,954,701 B2Watereye, Inc. · 2005
- Method for monitoring advanced separation and/or ion exchange processes124US 6,332,110 B1PerLorica, Inc. · 2001