C02F 3/16
The aerator having a vertical axis
Official title: the aerator having a vertical axis
C02F3/16 (The aerator having a vertical axis) appears on 133 US grants and 71 published applications in this corpus.
Search patents in C02F- Granted patents
- 133
- Published applications
- 71
- Assignees
- 73
- Inventors
- 193
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 4 |
| 2006 | 0 | 2 |
| 2007 | 5 | 5 |
| 2008 | 3 | 12 |
| 2009 | 3 | 5 |
| 2010 | 8 | 0 |
| 2011 | 5 | 1 |
| 2012 | 3 | 2 |
| 2013 | 1 | 7 |
| 2014 | 1 | 5 |
| 2015 | 3 | 3 |
| 2016 | 6 | 2 |
| 2017 | 3 | 4 |
| 2018 | 1 | 4 |
| 2019 | 3 | 2 |
| 2020 | 4 | 0 |
| 2021 | 2 | 4 |
| 2022 | 4 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Recirculating aquaculture mixed-cell raceway system14 Jul 2026US 12,677,808 B2
- Method for optimizing the energy consumption of an aerator in the field of water treatment23 Dec 2025US 12,503,381 B2L'Air Liquide Societe Anonyme Pour L'Etude Et L' Exploitation Des Procedes George Claude
- Submersible aeration apparatus9 Apr 2024US 11,951,447 B1Tsurumi Manufacturing Co., Ltd.
- Flow straightening vane for aerator7 Jun 2022US 11,352,276 B2Aqua-Aerobic Systems, Inc.
- Solar-powered aeration device for sludge turnover and planting and method22 Mar 2022US 11,278,010 B2Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences
- Mechanical wave generator to affect water qulaity25 Dec 2025US 2025/0388491 A1
- Recirculating Aquaculture Mixed-Cell Raceway System11 Sep 2025US 2025/0280802 A1
- Oxygenation assembly for aquaculture8 May 2025US 2025/0144579 A1Poseidon Ocean Systems Ltd.
- Submersible Aeration Apparatus21 Mar 2024US 2024/0091720 A1Tsurumi Manufacturing Co., Ltd.
- Circulation Pump for Vertically Circulating Water in Bodies of Water Using Consecutive Expanding Super Air Bubbles10 Mar 2022US 2022/0073389 A1Kellgren Group, Inc.
Most cited
By later US patents
- Device and process for liquid treatment76US 5,948,326 ABattelle Memorial Institute · 1999
- Rotary surface aerator with adjustable liquid transporting units47US 4,465,645 A1984
- Aeration device43US 4,290,885 A1981
- Floating aerator having means to vary the length of the draft pipe38US 4,030,859 ALake Aid Inc. · 1977
- Mixer/aerator for waste water38US 5,021,154 A1991