C02F 3/207
With axial thrust propellers
Official title: {with axial thrust propellers}
C02F3/207 (With axial thrust propellers) appears on 89 US grants and 16 published applications in this corpus.
Search patents in C02F- Granted patents
- 89
- Published applications
- 16
- Assignees
- 35
- Inventors
- 124
- Latest grant
- 9 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 11 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 2 | 1 |
| 2012 | 2 | 3 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for treating fluids having improved aeration efficiency and dual function operation9 Aug 2022US 11,406,943 B1
- Pivotal rigid vortex shield27 Oct 2020US 10,814,294 B1Aeration Industries International, Inc.
- Gas injection and recycling apparatus and methods16 Jun 2020US 10,683,221 B2American Air Liquide, Inc.
- Apparatus and method for water treatment via vertical water movement through a funnel21 Aug 2018US 10,052,573 B2Wears X Pty Ltd
- Horizontal agitator2 Apr 2013US 8,408,783 B2Invent Umwelt-Und Verfahrenstechnik AG
- Use of copper-cysteamine for wastewater treatment25 Jun 2026US 2026/0176179 A1Board of Regents, The University of Texas System
- Gas injection and recycling apparatus and methods20 Jun 2019US 2019/0185353 A1American Air Liquide, Inc.
- Water treatment16 Apr 2015US 2015/0101989 A1Wears X Pty Ltd
- Mixing of a lower density material into a flow of a higher density material25 Oct 2012US 2012/0266963 A1Envirozone Systems Corp.
- Floating water treatment device13 Sep 2012US 2012/0228216 A1J.P. AquaKnit Ltd
Most cited
By later US patents
- Combined biological-chemical detoxification of organics60US 4,277,342 ACornell Research Foundation, Inc. · 1981
- Aeration apparatus and method47US 4,732,682 APoscon, Inc. · 1988
- Apparatus for sparging gas into liquid46US 4,066,722 AUnion Carbide Corporation · 1978
- Aeration device43US 4,290,885 A1981
- Aeration propeller and apparatus41US 4,240,990 AAeration Industries, Inc. · 1980