C02F 1/685
Devices for dosing the additives
Official title: {Devices for dosing the additives}
C02F1/685 (Devices for dosing the additives) appears on 1,421 US grants and 1,522 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,421
- Published applications
- 1,522
- Assignees
- 822
- Inventors
- 2,842
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 13 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 13 | 0 |
| 1981 | 15 | 0 |
| 1982 | 17 | 0 |
| 1983 | 10 | 0 |
| 1984 | 6 | 0 |
| 1985 | 14 | 0 |
| 1986 | 11 | 0 |
| 1987 | 17 | 0 |
| 1988 | 19 | 0 |
| 1989 | 26 | 0 |
| 1990 | 12 | 0 |
| 1991 | 22 | 0 |
| 1992 | 19 | 0 |
| 1993 | 22 | 0 |
| 1994 | 19 | 0 |
| 1995 | 26 | 0 |
| 1996 | 13 | 0 |
| 1997 | 13 | 0 |
| 1998 | 20 | 0 |
| 1999 | 19 | 0 |
| 2000 | 24 | 0 |
| 2001 | 42 | 7 |
| 2002 | 29 | 26 |
| 2003 | 31 | 35 |
| 2004 | 29 | 41 |
| 2005 | 25 | 57 |
| 2006 | 33 | 35 |
| 2007 | 22 | 51 |
| 2008 | 21 | 52 |
| 2009 | 22 | 54 |
| 2010 | 30 | 68 |
| 2011 | 39 | 49 |
| 2012 | 22 | 48 |
| 2013 | 38 | 62 |
| 2014 | 34 | 63 |
| 2015 | 46 | 76 |
| 2016 | 48 | 58 |
| 2017 | 36 | 60 |
| 2018 | 63 | 82 |
| 2019 | 52 | 75 |
| 2020 | 63 | 79 |
| 2021 | 60 | 91 |
| 2022 | 41 | 79 |
| 2023 | 55 | 80 |
| 2024 | 57 | 66 |
| 2025 | 58 | 67 |
| 2026 | 33 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter for controlling pH of purified water and water purifier including the same22 Sep 2026US 12,741,892 B2Coway Co., Ltd.
- Production device for pH/redox potential-adjusted water8 Sep 2026US 12,729,145 B2Kurita Water Industries Ltd.
- Integrated faucet for copper release1 Sep 2026US 12,722,990 B2Kohler India Corporation Private Limited
- Dispenser25 Aug 2026US 12,714,955 B2King Technology, Inc.
- Low-pressure injection system for pressurized fluid or gas lines25 Aug 2026US 12,715,797 B1
- Water treatment method and water treatment device8 Oct 2026US 2026/0308029 A1Organo Corporation
- Water enrichment system1 Oct 2026US 2026/0296931 A1Green Tech Water Ltd
- Process and system for degrading a chemical compound in a liquid stream1 Oct 2026US 2026/0296942 A1Aquasoil S.R.L.
- A water treatment cartridge1 Oct 2026US 2026/0296943 A1HCL Technologies Limited
- Debris removal sleeve1 Oct 2026US 2026/0297969 A1
Most cited
By later US patents
- Personal water filter bottle system161US 6,569,329 B1Innova Pure Water Inc. · 2003
- Swimming pool management system146US 6,125,481 A2000
- Diffuser/emulsifier124US 6,386,751 B1Diffusion Dynamics, Inc. · 2002
- Computerized system for feeding chemicals into water treatment system118US 4,648,043 ABetz Laboratories, Inc. · 1987
- Method and apparatus for filtration with plural ultraviolet treatment stages112US 5,236,595 AInternational Environmental Systems, Inc., USA · 1993