C02F 1/04
By distillation or evaporation
Official title: by distillation or evaporation
C02F1/04 (By distillation or evaporation) appears on 2,702 US grants and 2,793 published applications in this corpus.
Search patents in C02F- Granted patents
- 2,702
- Published applications
- 2,793
- Assignees
- 1,477
- Inventors
- 5,597
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 45 | 0 |
| 1977 | 29 | 0 |
| 1978 | 37 | 0 |
| 1979 | 36 | 0 |
| 1980 | 51 | 0 |
| 1981 | 40 | 0 |
| 1982 | 58 | 0 |
| 1983 | 26 | 0 |
| 1984 | 26 | 0 |
| 1985 | 20 | 0 |
| 1986 | 23 | 0 |
| 1987 | 20 | 0 |
| 1988 | 20 | 0 |
| 1989 | 29 | 0 |
| 1990 | 34 | 0 |
| 1991 | 22 | 0 |
| 1992 | 27 | 0 |
| 1993 | 34 | 0 |
| 1994 | 18 | 0 |
| 1995 | 19 | 0 |
| 1996 | 32 | 0 |
| 1997 | 21 | 0 |
| 1998 | 26 | 0 |
| 1999 | 23 | 0 |
| 2000 | 25 | 0 |
| 2001 | 25 | 5 |
| 2002 | 21 | 31 |
| 2003 | 30 | 35 |
| 2004 | 20 | 50 |
| 2005 | 25 | 53 |
| 2006 | 28 | 47 |
| 2007 | 24 | 59 |
| 2008 | 36 | 71 |
| 2009 | 37 | 72 |
| 2010 | 37 | 93 |
| 2011 | 48 | 108 |
| 2012 | 57 | 117 |
| 2013 | 73 | 110 |
| 2014 | 93 | 163 |
| 2015 | 85 | 163 |
| 2016 | 85 | 158 |
| 2017 | 93 | 140 |
| 2018 | 130 | 162 |
| 2019 | 170 | 163 |
| 2020 | 174 | 160 |
| 2021 | 140 | 161 |
| 2022 | 121 | 150 |
| 2023 | 117 | 155 |
| 2024 | 119 | 176 |
| 2025 | 103 | 114 |
| 2026 | 70 | 77 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C02F 1/048Purification of waste water by evaporation912
- C02F 1/14Using solar energy605
- C02F 1/16Using waste heat from other processes386
- C02F 1/10By direct contact with a particulate solid or with a fluid, as362
- C02F 1/06Flash evaporation274
- C02F 1/041By means of vapour compression263
- C02F 1/043Details209
- C02F 1/08Thin film evaporation173
Recent patents
- Preparation method of high-efficiency gel for seawater desalination6 Oct 2026US 12,752,249 B2Shanghai Maritime University
- System and method embodiments for treating produced water using supercritical water desalination coupled with supercritical water oxidation6 Oct 2026US 12,753,101 B1Triad National Security, LLC
- Seawater desalination equipment29 Sep 2026US 12,746,486 B2Manzeon Co., Ltd.
- Resonant thermal oscillator to improve output of a thermo-fluidic system22 Sep 2026US 12,741,232 B2William Marsh Rice University
- Distillation using mechanical advantage and a single fluid15 Sep 2026US 12,735,332 B1
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
- Water purifier that uses waste heat from thermoelectric element8 Oct 2026US 2026/0308018 A1Coway Co., Ltd.
- Systems, Devices, and Methods for Electrical Generation from Vacuum Distillation1 Oct 2026US 2026/0295457 A1American Water and Energy LLC
- Additive combination for treatment of heavy metals and dioxins in fly ash1 Oct 2026US 2026/0295645 A1Zhejiang University
- Distillation system pressure control system and method1 Oct 2026US 2026/0296924 A1Honeywell International Inc.
Most cited
By later US patents
- Scavenger energy converter system its new applications and its control systems239US 6,327,994 B12001
- Water treatment method for heavy oil production150US 6,733,636 B1Ionics, Incorporated · 2004
- Processing methods for the oxidation of organics in supercritical water136US 4,543,190 AModar, Inc. · 1985
- Processing methods for the oxidation of organics in supercritical water132US 4,338,199 AModar, Inc. · 1982
- Water purification process117US 4,808,287 A1989