B01D 3/28
Fractionating columns with surface contact and vertical guides
Official title: Fractionating columns with surface contact and vertical guides, e.g. film action
B01D3/28 (Fractionating columns with surface contact and vertical guides) appears on 69 US grants and 71 published applications in this corpus.
Search patents in B01D- Granted patents
- 69
- Published applications
- 71
- Assignees
- 52
- Inventors
- 167
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 5 |
| 2014 | 3 | 18 |
| 2015 | 4 | 6 |
| 2016 | 8 | 5 |
| 2017 | 10 | 4 |
| 2018 | 7 | 1 |
| 2019 | 1 | 9 |
| 2020 | 3 | 7 |
| 2021 | 4 | 3 |
| 2022 | 5 | 6 |
| 2023 | 6 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Vapor-liquid contacting apparatus and process with cross contacting20 Feb 2024US 11,904,262 B2Uop LLC
- Separation processes and units via minimal surface area mass and heat transfer packing7 Nov 2023US 11,806,671 B2Geosepaa LLC
- Vapor-liquid contacting apparatus and process with downcomer at shell17 Oct 2023US 11,786,855 B2Uop LLC
- Method for continuously recovering dimethylformamide from waste solution resulting from production of polyimide10 Oct 2024US 2024/0336557 A1Gtrnr Co., Ltd.
- Vapor-liquid contacting apparatus and process with downcomer at shell28 Dec 2023US 2023/0415083 A1Uop LLC
- Gas-liquid contactor with packing for capturing carbon dioxide17 Nov 2022US 2022/0362737 A1Carbon Engineering ULC
- Contacter22 Sep 2022US 2022/0297081 A1Hirschberg Engineering
- Multi-channel distillation column packing1 Sep 2022US 2022/0274086 A1Norell, Inc.
Most cited
By later US patents
- Co-current vapor-liquid contacting apparatus47US 7,424,999 B2Uop LLC · 2008
- 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
- Method for contacting large volumes of gas and liquid across microscopic interfaces29US 6,918,949 B1Jaeco Technology, Inc. · 2005
- Minimal surface area mass and heat transfer packing17US 9,440,216 B2Geosepaa LLC · 2016