B01F 23/2322
Using columns
Official title: {using columns, e.g. multi-staged columns}
B01F23/2322 (Using columns) appears on 113 US grants and 94 published applications in this corpus.
Search patents in B01F- Granted patents
- 113
- Published applications
- 94
- Assignees
- 64
- Inventors
- 220
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 2 | 3 |
| 2004 | 3 | 4 |
| 2005 | 1 | 2 |
| 2006 | 4 | 6 |
| 2007 | 5 | 1 |
| 2008 | 2 | 3 |
| 2009 | 3 | 3 |
| 2010 | 1 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 4 |
| 2013 | 0 | 2 |
| 2014 | 3 | 6 |
| 2015 | 4 | 6 |
| 2016 | 5 | 8 |
| 2017 | 7 | 4 |
| 2018 | 5 | 4 |
| 2019 | 3 | 7 |
| 2020 | 9 | 11 |
| 2021 | 8 | 1 |
| 2022 | 2 | 4 |
| 2023 | 7 | 5 |
| 2024 | 4 | 1 |
| 2025 | 5 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Co-current and countercurrent contactor for immiscible fluids4 Nov 2025US 12,458,940 B2Streamline Innovations Inc
- Device for dissolving gas in liquid30 Sep 2025US 12,428,327 B2
- Water filtration and aeration unit18 Mar 2025US 12,252,415 B2Wets LLC
- Countercurrent contacting devices11 Feb 2025US 12,220,674 B2Koch-Glitsch, LP
- Plunging liquid jet reactor and water treatment system14 Jan 2025US 12,195,374 B1Kuwait University
- Piston Foamer27 Aug 2026US 2026/0249255 A1
- Compositions comprising water and ultrafine bubbles and methods of making same22 May 2025US 2025/0161890 A1Hydrosome IP, LLC
- Contact tower tray and related methods7 Mar 2024US 2024/0075404 A1Produced Water Absorbents Inc.
- Device for dissolving gas in liquid23 Nov 2023US 2023/0373825 A1
- Co-current and Counter Contactor for Immiscible Fluids19 Oct 2023US 2023/0330607 A1Streamline Innovations Inc
Most cited
By later US patents
- Oxygen enriched liquids, method and apparatus for making, and applications thereof77US 5,814,222 ALife International Products, Inc. · 1998
- Method and apparatus for oxygenating water71US 4,749,493 A1988
- Method and apparatus for making oxygen enriched liquids70US 5,885,467 ALife International Products, Inc. · 1999
- Gas dissolving and releasing liquid treatment system68US 5,167,806 AInternational Environmental Systems, Inc. · 1992
- Water and wastewater treatment system50US 5,240,600 AInternational Environmental Systems, Inc., USA · 1993