C02F 1/44
Treatment of water, waste water, or sewage: by dialysis, osmosis or reverse
Official title: by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)}
C02F1/44 (Treatment of water, waste water, or sewage: by dialysis, osmosis or reverse) appears on 5,131 US grants and 7,505 published applications in this corpus.
Search patents in C02F- Granted patents
- 5,131
- Published applications
- 7,505
- Assignees
- 2,907
- Inventors
- 13,037
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 22 | 0 |
| 1989 | 25 | 0 |
| 1990 | 19 | 0 |
| 1991 | 34 | 0 |
| 1992 | 53 | 0 |
| 1993 | 33 | 0 |
| 1994 | 39 | 0 |
| 1995 | 34 | 0 |
| 1996 | 37 | 0 |
| 1997 | 42 | 0 |
| 1998 | 45 | 0 |
| 1999 | 65 | 0 |
| 2000 | 67 | 0 |
| 2001 | 77 | 16 |
| 2002 | 101 | 107 |
| 2003 | 84 | 133 |
| 2004 | 73 | 157 |
| 2005 | 81 | 156 |
| 2006 | 82 | 194 |
| 2007 | 78 | 149 |
| 2008 | 77 | 186 |
| 2009 | 86 | 206 |
| 2010 | 98 | 247 |
| 2011 | 123 | 280 |
| 2012 | 126 | 275 |
| 2013 | 131 | 319 |
| 2014 | 166 | 349 |
| 2015 | 165 | 353 |
| 2016 | 176 | 377 |
| 2017 | 239 | 412 |
| 2018 | 272 | 391 |
| 2019 | 320 | 425 |
| 2020 | 341 | 421 |
| 2021 | 333 | 442 |
| 2022 | 293 | 406 |
| 2023 | 282 | 405 |
| 2024 | 290 | 405 |
| 2025 | 298 | 373 |
| 2026 | 175 | 321 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water purification system29 Sep 2026US 12,747,167 B2Fermi Forward Discovery Group, LLC
- Pure water production system and pure water production method29 Sep 2026US 12,747,171 B2Organo Corporation
- Resonant thermal oscillator to improve output of a thermo-fluidic system22 Sep 2026US 12,741,232 B2William Marsh Rice University
- Intelligent reverse osmosis control22 Sep 2026US 12,741,887 B2Ozono Polaris, S.A. de C.V.
- Water quality measurement system and water quality measurement method22 Sep 2026US 12,741,889 B2Nomura Micro Science Co., Ltd.
- Filtration manifold with integrated bypass8 Oct 2026US 2026/0307010 A1Midea Group Co., Ltd.
- Salt-rejecting continuous passive solar thermal desalination via thin-film condensation8 Oct 2026US 2026/0307012 A1The Regents of the University of California
- Contorted polyamide membranes and methods of use thereof8 Oct 2026US 2026/0307019 A1University of Houston System
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Utilization of an ultra-high pressure reverse osmosis membrane system to treat industrial wastewater or a reverse osmosis reject waste stream8 Oct 2026US 2026/0308017 A1Renovo Resources LLC
Most cited
By later US patents
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- Peritoneal dialysis system using reverse osmosis purification device260US 5,498,338 AAbbott Laboratories · 1996
- Medicament preparation and treatment devices, methods, and systems259US 10,478,544 B2NxStage Medical, Inc. · 2019
- Hemodialysis machine with automatic priming by induced pressure pulses251US 5,863,421 AAksys, Ltd. · 1999
- Method of rinsing back blood to hemodialysis patient243US 5,690,831 AAksys, Ltd. · 1997