C02F 1/74
With air
Official title: with air (aeration of stretches of water C02F7/00)
C02F1/74 (With air) appears on 724 US grants and 899 published applications in this corpus.
Search patents in C02F- Granted patents
- 724
- Published applications
- 899
- Assignees
- 528
- Inventors
- 1,681
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 16 | 0 |
| 2001 | 22 | 6 |
| 2002 | 18 | 22 |
| 2003 | 21 | 22 |
| 2004 | 16 | 34 |
| 2005 | 22 | 41 |
| 2006 | 25 | 34 |
| 2007 | 31 | 28 |
| 2008 | 16 | 34 |
| 2009 | 22 | 35 |
| 2010 | 22 | 27 |
| 2011 | 17 | 27 |
| 2012 | 21 | 40 |
| 2013 | 17 | 44 |
| 2014 | 25 | 45 |
| 2015 | 23 | 50 |
| 2016 | 34 | 36 |
| 2017 | 35 | 34 |
| 2018 | 24 | 30 |
| 2019 | 33 | 51 |
| 2020 | 38 | 41 |
| 2021 | 36 | 45 |
| 2022 | 24 | 43 |
| 2023 | 37 | 41 |
| 2024 | 27 | 25 |
| 2025 | 25 | 32 |
| 2026 | 17 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for removal of volatile hydrocarbons from a water stream4 Aug 2026US 12,698,219 B2ChartWater, LLC
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Vacuum air lift systems including a fluidic oscillator28 Jul 2026US 12,692,177 B2Searen, LLC
- Method and system for pre-treating high strength wastewater7 Jul 2026US 12,673,887 B2
- Method for separating iron element in brine and application thereof26 May 2026US 12,637,360 B2BYD Company Limited
- Systems and methods of gas remediation and sediment harvesting17 Sep 2026US 2026/0274725 A1Floating Island International Inc.
- Energy-saving disinfection- and oxidation system for water treatment10 Sep 2026US 2026/0265094 A1Mercaform Holding GmbH
- System for resource recovery and zero liquid discharge treatment of wastewater generated during a precursor manufacturing process for a cathode active material of secondary battery10 Sep 2026US 2026/0265105 A1Bkt Co., Ltd.
- Device for transport and treatment of liquid20 Aug 2026US 2026/0241347 A1Searas AS
- Metal-free catalyst for dye degradation and method of preparation thereof20 Aug 2026US 2026/0242251 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Oxygenating apparatus, method for oxygenating a liquid therewith, and applications thereof147US 6,120,008 ALife International Products, Inc. · 2000
- Continuous process for the reclamation of waste drilling fluids141US 4,482,459 ANewpark Waste Treatment Systems Inc. · 1984
- Cyclic aeration system for submerged membrane modules132US 6,245,239 B1Zenon Environmental Inc. · 2001
- Diffuser/emulsifier124US 6,386,751 B1Diffusion Dynamics, Inc. · 2002
- Cyclic aeration system for submerged membrane modules109US 6,550,747 B2Zenon Environmental Inc. · 2003