B01F 23/2342
With stirrers near to the liquid surface
Official title: {with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force}
B01F23/2342 (With stirrers near to the liquid surface) appears on 159 US grants and 89 published applications in this corpus.
Search patents in B01F- Granted patents
- 159
- Published applications
- 89
- Assignees
- 94
- Inventors
- 240
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 2 |
| 2002 | 7 | 2 |
| 2003 | 2 | 4 |
| 2004 | 4 | 11 |
| 2005 | 3 | 1 |
| 2006 | 4 | 2 |
| 2007 | 2 | 9 |
| 2008 | 2 | 8 |
| 2009 | 3 | 7 |
| 2010 | 7 | 4 |
| 2011 | 5 | 3 |
| 2012 | 6 | 1 |
| 2013 | 3 | 6 |
| 2014 | 0 | 4 |
| 2015 | 4 | 3 |
| 2016 | 2 | 4 |
| 2017 | 1 | 2 |
| 2018 | 3 | 3 |
| 2019 | 2 | 4 |
| 2020 | 3 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Cooling water stirrer and water purifier having the same29 Nov 2022US 11,511,218 B2LG Electronics Inc.
- Flow straightening vane for aerator7 Jun 2022US 11,352,276 B2Aqua-Aerobic Systems, Inc.
- Rotary compression mixer21 Sep 2021US 11,123,697 B2
- Systems and methods for formation of biologically active granules and biologically active granules12 Jan 2021US 10,889,515 B2Blue Frog Technologies LLC
- Bubble-fountain-type water circulation device3 Sep 2026US 2026/0257951 A1C&C Solution Co., Ltd
- A system and method for generating nanobubbles24 Oct 2024US 2024/0350988 A1Rainforest Algae Corp.
- A system and method for enhancing gas mass transfer24 Oct 2024US 2024/0352393 A1Rainforest Algae Corp.
- Alcoholizer for receiving a fluid15 Feb 2024US 2024/0052280 A1Elite Power Global Trading Ltd.
- Tubular reactor with mixing means18 May 2023US 2023/0149888 A1Autichem Ltd
Most cited
By later US patents
- Fluid treatment125US 4,719,056 AIsoworth Limited · 1988
- Device and process for liquid treatment76US 5,948,326 ABattelle Memorial Institute · 1999
- Carbonation system and method60US 7,114,707 B22006
- Centrifugal rotating disc assembly for biological waste water treatment apparatus56US 4,268,385 ADengyosha Engineering Co., Inc. · 1981
- Rotary surface aerator with adjustable liquid transporting units47US 4,465,645 A1984