C02F 5/06
Using calcium compounds
Official title: using calcium compounds
C02F5/06 (Using calcium compounds) appears on 94 US grants and 147 published applications in this corpus.
Search patents in C02F- Granted patents
- 94
- Published applications
- 147
- Assignees
- 67
- Inventors
- 286
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 12 |
| 2009 | 0 | 3 |
| 2010 | 5 | 4 |
| 2011 | 7 | 4 |
| 2012 | 4 | 3 |
| 2013 | 0 | 5 |
| 2014 | 1 | 4 |
| 2015 | 2 | 11 |
| 2016 | 3 | 10 |
| 2017 | 5 | 4 |
| 2018 | 5 | 11 |
| 2019 | 5 | 12 |
| 2020 | 8 | 4 |
| 2021 | 8 | 4 |
| 2022 | 3 | 6 |
| 2023 | 8 | 9 |
| 2024 | 8 | 9 |
| 2025 | 6 | 16 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Process for removing hardness and total organic carbon from drinking water25 Aug 2026US 12,715,796 B2Veolia Water Solutions & Technologies Support
- Methods of PFAS destruction using UV irradiation at 222 nanometers16 Jun 2026US 12,655,051 B2Claros Technologies Inc.
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- Methods of PFAS Destruction using UV Irradiation at 222 Nanometers17 Sep 2026US 2026/0274731 A1Claros Technologies Inc.
- System and method for producing alkaline water having ph stability and increased mineral content23 Jul 2026US 2026/0209078 A1Generosity Water, Inc.
- Methods and Systems of Iodine Capture from Aqueous Solutions21 May 2026US 2026/0138905 A1Claros Technologies Inc.
- Compositions and methods for controlling sludge bed properties and improving lime softening process efficiency19 Feb 2026US 2026/0049011 A1ChampionX LLC
Most cited
By later US patents
- Electrodialysis reversal process and apparatus with bipolar membranes58US 5,240,579 AYeda Research and Development Co. Ltd. · 1993
- Method for treating wastewater or produced water56US 7,815,804 B2Otv SA · 2010
- Process for pre-treating and desalinating sea water54US 7,198,722 B22007
- High-efficiency water-softening process40US 8,147,696 B12012
- Cleaning compositions with water insoluble conversion agents and methods of making and using them31US 8,071,528 B2Ecolab USA Inc. · 2011