C02F 3/1294
"venturi" aeration means
Official title: {"Venturi" aeration means}
C02F3/1294 ("venturi" aeration means) appears on 235 US grants and 74 published applications in this corpus.
Search patents in C02F- Granted patents
- 235
- Published applications
- 74
- Assignees
- 132
- Inventors
- 327
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 9 | 0 |
| 1978 | 15 | 0 |
| 1979 | 10 | 0 |
| 1980 | 17 | 0 |
| 1981 | 12 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 9 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 3 |
| 2002 | 0 | 2 |
| 2003 | 3 | 0 |
| 2004 | 1 | 3 |
| 2005 | 3 | 4 |
| 2006 | 3 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 3 | 5 |
| 2010 | 1 | 2 |
| 2011 | 2 | 4 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 3 |
| 2015 | 3 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 7 |
| 2018 | 2 | 6 |
| 2019 | 6 | 3 |
| 2020 | 2 | 3 |
| 2021 | 1 | 5 |
| 2022 | 4 | 2 |
| 2023 | 3 | 1 |
| 2024 | 1 | 5 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and apparatus for treatment and purification of wastewater9 Sep 2025US 12,410,084 B2Rio Resources LLC
- Wastewater treatment device and method1 Jul 2025US 12,344,542 B2Ariel Scientific Innovations Ltd.
- System and method for separating competing anions from per- and polyfluoroalkyl substances (PFAS) in a flow of water4 Mar 2025US 12,240,771 B2Emerging Compounds Treatment Technologies, Inc.
- Fluid remanufacturing21 Jan 2025US 12,202,753 B2Clean Water Tech, LLC
- Fluid remanufacturing1 Oct 2024US 12,103,875 B2Clean Water Tech, LLC
- Wastewater treatment systems and methods involving a biologically active conduit21 May 2026US 2026/0138902 A1
- Systems and methods of gas infusion for wastewater treatment8 Jan 2026US 2026/0008019 A1Prosper Technologies, LLC
- A turbine assisted venturi mixer2 Jan 2025US 2025/0001372 A1
- System and method for separating competing anions from per- and polyfluoroalkyl substances (pfas) in a flow of water7 Nov 2024US 2024/0368003 A1Emerging Compounds Treatment Technologies, Inc.
- Fluid remanufacturing6 Jun 2024US 2024/0182334 A1Clean Water Tech, LLC
Most cited
By later US patents
- Liquid waste oxygenation441US 5,463,176 A1995
- Modular shipboard membrane bioreactor system for combined wastewater streams98US 5,254,253 AZenon Environmental Inc. · 1993
- Method and apparatus for in situ groundwater remediation82US 5,302,286 AThe Board of Trustees of the Leland Stanford Junior University · 1994
- Method and system for enriching oxygen content of water78US 4,664,680 AATEC Inc. · 1987
- Treatment of liquid69US 4,163,712 ABOC Limited · 1979