B01D 3/26
Fractionating columns in which vapour and liquid flow past each other, or
Official title: Fractionating columns in which vapour and liquid flow past each other, or in which the fluid is sprayed into the vapour, or in which a two-phase mixture is passed in one direction
B01D3/26 (Fractionating columns in which vapour and liquid flow past each other, or) appears on 134 US grants and 146 published applications in this corpus.
Search patents in B01D- Granted patents
- 134
- Published applications
- 146
- Assignees
- 104
- Inventors
- 365
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 3 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 4 |
| 2008 | 2 | 2 |
| 2009 | 2 | 4 |
| 2010 | 1 | 2 |
| 2011 | 3 | 1 |
| 2012 | 0 | 4 |
| 2013 | 1 | 7 |
| 2014 | 4 | 19 |
| 2015 | 4 | 12 |
| 2016 | 9 | 15 |
| 2017 | 16 | 12 |
| 2018 | 13 | 7 |
| 2019 | 9 | 14 |
| 2020 | 7 | 10 |
| 2021 | 7 | 6 |
| 2022 | 8 | 9 |
| 2023 | 10 | 7 |
| 2024 | 7 | 5 |
| 2025 | 5 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process and system for waste heat recovery from a flue gas generator24 Mar 2026US 12,584,628 B1Black Swan, LLC
- Vapor-liquid contacting apparatus and process with downcomer at shell6 Jan 2026US 12,515,158 B2Uop LLC
- Short path fractional distillation apparatus30 Dec 2025US 12,508,520 B1Artisan Industries Inc.
- Co-current and countercurrent contactor for immiscible fluids4 Nov 2025US 12,458,940 B2Streamline Innovations Inc
- Method and design of multiple counterrotating unit reactor12 Aug 2025US 12,383,846 B2Schlumberger Technology Corporation
- Reactive monomer separation device26 Mar 2026US 2026/0084075 A1LG Chem.Ltd.
- Reactive monomer separation device26 Mar 2026US 2026/0084076 A1LG Chem.Ltd.
- Method for continuously recovering dimethylformamide from waste solution resulting from production of polyimide10 Oct 2024US 2024/0336557 A1Gtrnr Co., Ltd.
- Method and design of multiple counterrotating unit reactor12 Sep 2024US 2024/0299860 A1Schlumberger Technology Corporation
- Process for installing a section of packing in a casing18 Jul 2024US 2024/0238752 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- System for removal and disposal of minor amounts of organics from contaminated water60US 5,176,798 AShell Oil Company · 1993
- Co-current vapor-liquid contacting apparatus47US 7,424,999 B2Uop LLC · 2008
- Co-current contacting separation tray design and methods for using same38US 6,059,934 AMobil Oil Corporation · 2000
- Apparatus for contacting large volumes of gas and liquid across microscopic interfaces36US 6,830,608 B1Jaeco Technology, Inc. · 2004
- On-board fuel fractionation system and methods to generate an engine starting fuel34US 7,370,610 B2Board of Regents, The University of Texas System · 2008