C02F 2303/22
Eliminating or preventing deposits, scale removal, scale prevention
Official title: Eliminating or preventing deposits, scale removal, scale prevention (C02F1/042, C02F1/4602, C02F5/00 take precedence)
C02F2303/22 (Eliminating or preventing deposits, scale removal, scale prevention) appears on 826 US grants and 1,191 published applications in this corpus.
Search patents in C02F- Granted patents
- 826
- Published applications
- 1,191
- Assignees
- 614
- Inventors
- 2,281
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 1 |
| 2002 | 4 | 1 |
| 2003 | 5 | 11 |
| 2004 | 8 | 9 |
| 2005 | 6 | 12 |
| 2006 | 4 | 6 |
| 2007 | 6 | 17 |
| 2008 | 4 | 17 |
| 2009 | 5 | 11 |
| 2010 | 4 | 12 |
| 2011 | 19 | 19 |
| 2012 | 6 | 27 |
| 2013 | 11 | 49 |
| 2014 | 18 | 52 |
| 2015 | 26 | 86 |
| 2016 | 35 | 92 |
| 2017 | 49 | 67 |
| 2018 | 47 | 67 |
| 2019 | 67 | 85 |
| 2020 | 69 | 77 |
| 2021 | 71 | 96 |
| 2022 | 46 | 76 |
| 2023 | 56 | 103 |
| 2024 | 69 | 70 |
| 2025 | 58 | 82 |
| 2026 | 41 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water filtration assembly and freeze prevention22 Sep 2026US 12,741,885 B2Haier US Appliance Solutions, Inc.
- Silica inhibitors for silica inhibition and dispersion22 Sep 2026US 12,741,890 B2Baker Hughes Oilfield Operations LLC
- Hydrodynamic cavitation system for the removal of unwanted, toxic, or contaminated organic and inorganic compounds25 Aug 2026US 12,715,788 B28215 Technology, Inc.
- Anoxic bioreactor treatment followed by pH adjusted peroxide/iron treatment for enhanced, efficient selenium removal in wastewaters25 Aug 2026US 12,715,802 B2Evoqua Water Technologies LLC
- Utilizing alternative energy for water purification, water disposal, industrial heat, and electricity18 Aug 2026US 12,709,553 B2Katz Water Tech, LLC
- Integrated Method and Apparatus for Treatment of Produced Water24 Sep 2026US 2026/0285725 A1Tetra Technologies, Inc.
- Integrated Method and Apparatus for Treatment of Produced Water24 Sep 2026US 2026/0285726 A1Tetra Technologies, Inc.
- Recirculating, purifying, disinfecting, cooling, decontaminating, decrystallizing feedback controlled water system for drinking water and other uses to improve health and well being of animals and humans3 Sep 2026US 2026/0257954 A1Wet Holdings (Global) Limited
- Membrane bioreactor wastewater treatment using calcium carbonate27 Aug 2026US 2026/0250169 A1Omya International AG
- Magnetic molecular resonator for water and other fluids20 Aug 2026US 2026/0242259 A1
Most cited
By later US patents
- Apparatus for treating liquid to prevent and/or remove scale deposits75US 5,074,998 A1991
- Biofilm reduction method72US 5,462,644 AMinnesota Mining and Manufacturing Company · 1995
- UV apparatus for fluid treatment69US 5,675,153 A1997
- Electrostatic device for water treatment66US 5,591,317 A1997
- Method and apparatus for electromagnetically treating a fluid53US 4,879,045 A1989