B01F 23/2333
Single stirrer-drive aerating units
Official title: {Single stirrer-drive aerating units, e.g. with the stirrer-head pivoting around an horizontal axis}
B01F23/2333 (Single stirrer-drive aerating units) appears on 57 US grants and 37 published applications in this corpus.
Search patents in B01F- Granted patents
- 57
- Published applications
- 37
- Assignees
- 29
- Inventors
- 92
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 5 |
| 2006 | 2 | 2 |
| 2007 | 3 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 3 | 1 |
| 2021 | 2 | 3 |
| 2022 | 3 | 0 |
| 2023 | 2 | 0 |
| 2024 | 2 | 3 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Liquid aeration and mixing apparatus float mount for wrap-around hand rail and grating16 Sep 2025US 12,415,168 B1Newterra Ltd.
- Submersible aeration apparatus9 Apr 2024US 11,951,447 B1Tsurumi Manufacturing Co., Ltd.
- Aeration equipment for wastewater treatment19 Mar 2024US 11,931,703 B1
- Hyperboloid agitator for circulating liquids, and agitating and gassing device22 Aug 2023US 11,731,090 B2Invent Umwelt-Und Verfahrenstechnik AG
- Apparatus for treating fluids having improved aeration efficiency and operational durability7 Mar 2023US 11,596,907 B1
- Bubble generating apparatus and fermentation tank including same11 Sep 2025US 2025/0281890 A1Cj Cheiljedang Corporation
- A closure for a bioreactor14 Aug 2025US 2025/0257303 A1Global Life Sciences Solutions USA LLC
- Aerating blender11 Jul 2024US 2024/0226833 A1University of South Carolina
- Submersible Aeration Apparatus21 Mar 2024US 2024/0091720 A1Tsurumi Manufacturing Co., Ltd.
- Aeration equipment for wastewater treatment29 Feb 2024US 2024/0066475 A1
Most cited
By later US patents
- Aeration apparatus and method47US 4,732,682 APoscon, Inc. · 1988
- Aeration propeller and apparatus41US 4,240,990 AAeration Industries, Inc. · 1980
- Method for treating water37US 4,280,911 AAeration Industries, Inc. · 1981
- Apparatus for mixing a gas and a liquid29US 4,308,221 AAeration Industries, Inc. · 1981
- Oscillating propeller type aerator apparatus and method27US 4,806,251 AAeration Industries, Inc. · 1989