C02F 3/24
Using free-fall aeration or spraying
Official title: using free-fall aeration or spraying
C02F3/24 (Using free-fall aeration or spraying) appears on 79 US grants and 24 published applications in this corpus.
Search patents in C02F- Granted patents
- 79
- Published applications
- 24
- Assignees
- 57
- Inventors
- 112
- Latest grant
- 15 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 3 | 4 |
| 2017 | 1 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 4 |
| 2021 | 3 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
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- Evaporation panel assemblies, systems, and methods3 Feb 2022US 2022/0033281 A1Ecovap, Inc.
- Dedekind cone valve and air infiltration system and method for hydroelectric plants27 Jan 2022US 2022/0025599 A1Cube Hydro Partners, LLC
- In-pond water quality maintenance system30 Dec 2021US 2021/0404134 A1Diamond Manufacturing Co.
Most cited
By later US patents
- Apparatus for oxygenating wastewater108US 7,008,535 B1DynamOx, Inc. · 2006
- Constructed wetlands system, treatment apparatus and method78US 6,740,232 B1Aquascape Designs, Inc. · 2004
- Methods and apparatus for treating a liquid with a gas76US 3,945,918 AAirco, Inc. · 1976
- Method for oxygenating wastewater73US 7,294,278 B2DynamOx, Inc. · 2007
- Method and apparatus for oxygenating water71US 4,749,493 A1988