C02F 2209/05
Conductivity or salinity
C02F2209/05 (Conductivity or salinity) appears on 975 US grants and 1,470 published applications in this corpus.
Search patents in C02F- Granted patents
- 975
- Published applications
- 1,470
- Assignees
- 786
- Inventors
- 2,902
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 2 |
| 2002 | 11 | 18 |
| 2003 | 15 | 18 |
| 2004 | 7 | 18 |
| 2005 | 13 | 32 |
| 2006 | 4 | 21 |
| 2007 | 5 | 25 |
| 2008 | 13 | 34 |
| 2009 | 17 | 39 |
| 2010 | 26 | 56 |
| 2011 | 26 | 71 |
| 2012 | 24 | 40 |
| 2013 | 32 | 61 |
| 2014 | 44 | 68 |
| 2015 | 20 | 61 |
| 2016 | 30 | 62 |
| 2017 | 51 | 59 |
| 2018 | 39 | 62 |
| 2019 | 51 | 71 |
| 2020 | 57 | 91 |
| 2021 | 72 | 90 |
| 2022 | 63 | 102 |
| 2023 | 60 | 115 |
| 2024 | 83 | 93 |
| 2025 | 82 | 84 |
| 2026 | 49 | 77 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for desalination of liquids22 Sep 2026US 12,741,888 B2Acquolina Il Mondo, LLC
- Method and apparatus for determining hardness of raw water of water softening device1 Sep 2026US 12,724,019 B2Foshan Midea Chungho Water Purification Equipment Co., Ltd.
- Soft-water system25 Aug 2026US 12,715,795 B2Kyungdong Navien Co., Ltd.
- Highly configurable adaptable mobile deionization trailer18 Aug 2026US 12,709,557 B2Evoqua Water Technologies LLC
- Measuring and controlling organic matter in waste water stream18 Aug 2026US 12,709,561 B2Kemira Oyj
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Electrochemical cell8 Oct 2026US 2026/0308024 A1Imperial College Innovations Limited
- Dynamic control of lithium production facility using model predictive controller1 Oct 2026US 2026/0297703 A1ExxonMobil Technology and Engineering Company
- Measurement apparatus for and method of dewatered sludge10 Sep 2026US 2026/0265082 A1Senfit Oy
- Methods and systems for treating fluid using a biochemical process under vacuum pressure3 Sep 2026US 2026/0257953 A1U.S. Peroxide, LLC
Most cited
By later US patents
- Medicament preparation and treatment devices, methods, and systems259US 10,478,544 B2NxStage Medical, Inc. · 2019
- Golf course irrigation water monitoring and treatment system204US 6,620,329 B2Turf Sentry, Inc. · 2003
- Electrodeionization apparatus202US 4,632,745 AMillipore Corporation · 1986
- 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