C02F 5/025
Hot-water softening devices
Official title: {Hot-water softening devices}
C02F5/025 (Hot-water softening devices) appears on 72 US grants and 59 published applications in this corpus.
Search patents in C02F- Granted patents
- 72
- Published applications
- 59
- Assignees
- 53
- Inventors
- 161
- Latest grant
- 5 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 3 | 4 |
| 2004 | 3 | 6 |
| 2005 | 3 | 3 |
| 2006 | 3 | 3 |
| 2007 | 1 | 1 |
| 2008 | 3 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 0 | 3 |
| 2012 | 3 | 4 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 3 | 6 |
| 2017 | 2 | 2 |
| 2018 | 1 | 1 |
| 2019 | 3 | 5 |
| 2020 | 3 | 0 |
| 2021 | 6 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 2 |
| 2024 | 3 | 3 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for desalination of liquids5 Nov 2024US 12,134,571 B2Acquolina Il Mondo, LLC
- Vertically stacked dual heat engine rack11 Jun 2024US 12,007,146 B2Rinnai America Corporation
- Systems and methods for desalination of liquids12 Mar 2024US 11,926,539 B2Acquolina Il Mondo, LLC
- Systems and methods for desalination of liquids28 Nov 2023US 11,827,536 B2Acquolina Il Mondo, LLC
- Treatment of OTSG blowdown8 Aug 2023US 11,719,082 B2ConocoPhillips Company
- Compositions and methods for controlling sludge bed properties and improving lime softening process efficiency19 Feb 2026US 2026/0049011 A1ChampionX LLC
- Systems and methods for desalination of liquids25 Sep 2025US 2025/0296856 A1Acquolina Il Mondo, LLC
- Systems and methods for desalination of liquids27 Jun 2024US 2024/0208842 A1Acquolina Il Mondo, LLC
- Systems and methods for desalination of liquids27 Jun 2024US 2024/0208843 A1Acquolina Il Mondo, LLC
- Methods of seawater softening for desalination and mineral extraction23 May 2024US 2024/0166543 A1Qatar Foundation for Education, Science and Community Development
Most cited
By later US patents
- Cooling water treatment composition44US 5,034,155 AJamestown Chemical Company, Inc. · 1991
- Water treatment process for oilfield produced water43US 7,520,993 B1Water & Power Technologies, Inc. · 2009
- Alkaline scale abatement38US 4,444,675 AMechanical Equipment Company, Inc. · 1984
- Household steam appliance having a scale-preventing device36US 5,743,034 ASeb S. A. · 1998
- Steam injection process for recovering heavy oil35US 4,969,520 AMobil Oil Corporation · 1990