C02F 1/447
By membrane distillation
Official title: {by membrane distillation (distillation and evaporation without the use of membranes C02F1/04)}
C02F1/447 (By membrane distillation) appears on 199 US grants and 332 published applications in this corpus.
Search patents in C02F- Granted patents
- 199
- Published applications
- 332
- Assignees
- 177
- Inventors
- 672
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 7 |
| 2011 | 3 | 10 |
| 2012 | 6 | 9 |
| 2013 | 2 | 8 |
| 2014 | 1 | 12 |
| 2015 | 7 | 20 |
| 2016 | 15 | 25 |
| 2017 | 14 | 20 |
| 2018 | 11 | 17 |
| 2019 | 16 | 19 |
| 2020 | 14 | 19 |
| 2021 | 14 | 33 |
| 2022 | 23 | 26 |
| 2023 | 15 | 20 |
| 2024 | 13 | 25 |
| 2025 | 25 | 33 |
| 2026 | 11 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Resonant thermal oscillator to improve output of a thermo-fluidic system22 Sep 2026US 12,741,232 B2William Marsh Rice University
- Atmospheric water generation systems and methods utilizing membrane-based water extraction14 Apr 2026US 12,599,849 B2Genesis Systems LLC
- Water purification and method for purifying water14 Apr 2026US 12,600,647 B2
- Membrane wastewater treatment system and method thereof7 Apr 2026US 12,595,193 B2Memsift Innovations Pte. Ltd.
- Solvent drying solution and processes therfor17 Mar 2026US 12,577,185 B2Aquafortus Technologies Limited
- Salt-rejecting continuous passive solar thermal desalination via thin-film condensation8 Oct 2026US 2026/0307012 A1The Regents of the University of California
- 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.
- Device and method for purifying a fluid in the liquid phase10 Sep 2026US 2026/0264020 A1
- Method for Organic-Solvent Removal27 Aug 2026US 2026/0249247 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Apparatus and process for desalination of seawater69US 5,102,550 AThe United States of America as represented by the Secretary of the Navy · 1992
- Precipitation-membrane distillation hybrid system for the treatment of aqueous streams53US 6,365,051 B12002
- Combined membrane-distillation-forward-osmosis systems and methods of use53US 8,029,671 B2Board of Regents of the Nevada System of Higher Education, on behalf of the University of Nevada, Reno · 2011
- Membrane-assisted fluid separation apparatus and method46US 7,459,084 B2Petro Sep International Ltd. · 2008
- Systems and methods for purification of liquids34US 8,083,942 B2Board of Regents of the Nevada System of Higher Education, on Behalf of the Universary of Nevada, Reno · 2011