B01F 23/2335
Characterised by the direction of introduction of the gas relative to the
Official title: {characterised by the direction of introduction of the gas relative to the stirrer}
B01F23/2335 (Characterised by the direction of introduction of the gas relative to the) appears on 99 US grants and 55 published applications in this corpus.
Search patents in B01F- Granted patents
- 99
- Published applications
- 55
- Assignees
- 63
- Inventors
- 186
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 3 |
| 2013 | 1 | 5 |
| 2014 | 4 | 2 |
| 2015 | 3 | 4 |
| 2016 | 1 | 4 |
| 2017 | 2 | 2 |
| 2018 | 3 | 0 |
| 2019 | 2 | 4 |
| 2020 | 3 | 1 |
| 2021 | 2 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 2 |
| 2024 | 3 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device and method for gassing a liquid31 Mar 2026US 12,589,367 B2Cetotec GmbH
- Gas-saturated liquid generator8 Apr 2025US 12,268,996 B2NUTRISTAMINA s.r.o.
- Mixing device10 Dec 2024US 12,161,981 B2RAMPF Production Systems GmbH & Co. KG
- Submersible aeration apparatus9 Apr 2024US 11,951,447 B1Tsurumi Manufacturing Co., Ltd.
- Aeration equipment for wastewater treatment19 Mar 2024US 11,931,703 B1
- Impeller assembly for a bioprocessing system6 Nov 2025US 2025/0340813 A1Global Life Sciences Solutions USA LLC
- Screw conveyor2 May 2024US 2024/0139691 A1
- Submersible Aeration Apparatus21 Mar 2024US 2024/0091720 A1Tsurumi Manufacturing Co., Ltd.
- Aeration equipment for wastewater treatment29 Feb 2024US 2024/0066475 A1
- Device and method for gassing a liquid24 Aug 2023US 2023/0264153 A1Cetotec GmbH
Most cited
By later US patents
- Rotary device for treating molten metal131US 4,634,105 AFoseco International Limited · 1987
- Gas dispersion stirrer with flow-inducing blades127US 5,318,360 AStelzer Ruhrtechnik GmbH · 1994
- Gas-liquid mixing process and apparatus59US 4,919,849 AUnion Carbide Industrial Gases Technology Corporation · 1990
- Static oxygenator for suspension culture of animal cells52US 4,960,706 ABaxter International Inc. · 1990
- Variable liquid level eductor/impeller gas-liquid mixing apparatus and process51US 5,451,348 APraxair Technology, Inc. · 1995