C02F 1/686
Devices for dosing liquid additives
Official title: {Devices for dosing liquid additives}
C02F1/686 (Devices for dosing liquid additives) appears on 388 US grants and 455 published applications in this corpus.
Search patents in C02F- Granted patents
- 388
- Published applications
- 455
- Assignees
- 275
- Inventors
- 938
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 12 | 0 |
| 2001 | 5 | 1 |
| 2002 | 9 | 6 |
| 2003 | 3 | 7 |
| 2004 | 4 | 8 |
| 2005 | 4 | 10 |
| 2006 | 5 | 9 |
| 2007 | 9 | 18 |
| 2008 | 3 | 21 |
| 2009 | 6 | 18 |
| 2010 | 10 | 12 |
| 2011 | 14 | 17 |
| 2012 | 9 | 13 |
| 2013 | 10 | 19 |
| 2014 | 6 | 21 |
| 2015 | 14 | 29 |
| 2016 | 17 | 14 |
| 2017 | 13 | 14 |
| 2018 | 16 | 26 |
| 2019 | 18 | 19 |
| 2020 | 22 | 26 |
| 2021 | 17 | 26 |
| 2022 | 10 | 28 |
| 2023 | 16 | 17 |
| 2024 | 19 | 24 |
| 2025 | 20 | 25 |
| 2026 | 9 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Introduction of an additive to water12 May 2026US 12,623,898 B1Brita LP
- Container, cartridge, kit and method for slow release of algaecide in swimming pools7 Apr 2026US 12,595,197 B2Sani-Marc Inc.
- Water remediation system24 Mar 2026US 12,583,778 B2Hydrolize Limited
- Sanitising system for drinking water systems17 Mar 2026US 12,577,096 B2Zip Heaters (Aust) Pty Ltd
- Proportional additive dosing pump with bidirectional rolling diaphragm17 Mar 2026US 12,577,946 B2Tefen Flow and Dosing Technologies LTD.
- Water treatment method and water treatment device8 Oct 2026US 2026/0308029 A1Organo Corporation
- A water treatment cartridge1 Oct 2026US 2026/0296943 A1HCL Technologies Limited
- Water treatment apparatus and water treatment method24 Sep 2026US 2026/0285720 A1Organo Corporation
- Urea processing apparatus and urea processing method20 Aug 2026US 2026/0242261 A1Samsung Electronics Co., Ltd.
- Alkalinity generation systems and methods6 Aug 2026US 2026/0225928 A1Pentair Water Pool and Spa, Inc.
Most cited
By later US patents
- Swimming pool management system146US 6,125,481 A2000
- Computerized system for feeding chemicals into water treatment system118US 4,648,043 ABetz Laboratories, Inc. · 1987
- Chemical dispenser76US 5,580,448 A1996
- Disinfection system and method72US 4,019,983 AHoudaille Industries, Inc. · 1977
- Apparatus for treating effluents71US 5,145,256 AEnvironmental Equipment Corporation · 1992