C02F 1/045
For obtaining ultra-pure water
Official title: {for obtaining ultra-pure water}
C02F1/045 (For obtaining ultra-pure water) appears on 59 US grants and 44 published applications in this corpus.
Search patents in C02F- Granted patents
- 59
- Published applications
- 44
- Assignees
- 42
- Inventors
- 146
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 2 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 1 | 0 |
| 2013 | 2 | 4 |
| 2014 | 4 | 3 |
| 2015 | 0 | 2 |
| 2016 | 3 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 7 |
| 2021 | 3 | 1 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 4 |
| 2025 | 0 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dirty water distillation and salt harvesting system, method, and apparatus6 Jan 2026US 12,515,145 B2Heat IP Holdco, LLC
- Zero discharge water treatment apparatus and method13 Feb 2024US 11,897,787 B2Zero Discharge, LLC
- Dirty water distillation and salt harvesting system, method, and apparatus16 Jan 2024US 11,872,508 B2XDI Holdings, LLC
- Methods and systems for zero liquid discharge recycling of waste generated from manufacturing operations7 Mar 2023US 11,597,668 B2GreenSource Fabrication LLC
- Multi-stage flash (MSF) reversal system and method11 Oct 2022US 11,465,068 B2King Abdullah University of Science and Technology
- Water treatment and desalination9 Apr 2026US 2026/0097972 A9Sylvan Source, Inc.
- Water treatment management apparatus, water treatment management system, and water treatment method3 Jul 2025US 2025/0214867 A1Organo Corporation
- System, method and device for treating a liquid5 Jun 2025US 2025/0178943 A1Ellen Medical Devices Pty Ltd.
- Water treatment and desalination29 May 2025US 2025/0171332 A1Sylvan Source, Inc.
- Water distillation device1 Aug 2024US 2024/0252948 A177 Vision Way Ltd
Most cited
By later US patents
- Water purification process117US 4,808,287 A1989
- Process for producing ultra-pure water and process for using said ultra-pure water74US 4,879,041 AHitachi, Ltd. · 1989
- Water purification unit and method69US 4,280,912 ADarco Water Systems, Inc. · 1981
- High efficiency water distillation apparatus using a heat pump system and process for use thereof64US 5,227,027 A1993
- Process of water recovery and removal48US 4,209,364 A1980