B01D 3/16
Fractionating columns in which vapour bubbles through liquid
Official title: Fractionating columns in which vapour bubbles through liquid (packing elements B01J19/30, B01J19/32)
B01D3/16 (Fractionating columns in which vapour bubbles through liquid) appears on 752 US grants and 470 published applications in this corpus.
Search patents in B01D- Granted patents
- 752
- Published applications
- 470
- Assignees
- 295
- Inventors
- 1,240
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 14 | 0 |
| 1978 | 10 | 0 |
| 1979 | 12 | 0 |
| 1980 | 13 | 0 |
| 1981 | 20 | 0 |
| 1982 | 19 | 0 |
| 1983 | 8 | 0 |
| 1984 | 13 | 0 |
| 1985 | 18 | 0 |
| 1986 | 12 | 0 |
| 1987 | 6 | 0 |
| 1988 | 11 | 0 |
| 1989 | 14 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 16 | 0 |
| 1993 | 17 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 17 | 0 |
| 1997 | 13 | 0 |
| 1998 | 15 | 0 |
| 1999 | 27 | 0 |
| 2000 | 21 | 0 |
| 2001 | 15 | 14 |
| 2002 | 20 | 19 |
| 2003 | 16 | 18 |
| 2004 | 16 | 36 |
| 2005 | 14 | 19 |
| 2006 | 18 | 12 |
| 2007 | 19 | 15 |
| 2008 | 8 | 18 |
| 2009 | 14 | 17 |
| 2010 | 11 | 12 |
| 2011 | 10 | 10 |
| 2012 | 19 | 16 |
| 2013 | 12 | 19 |
| 2014 | 10 | 18 |
| 2015 | 14 | 23 |
| 2016 | 22 | 30 |
| 2017 | 20 | 22 |
| 2018 | 23 | 27 |
| 2019 | 38 | 39 |
| 2020 | 22 | 17 |
| 2021 | 16 | 15 |
| 2022 | 14 | 14 |
| 2023 | 9 | 11 |
| 2024 | 11 | 12 |
| 2025 | 7 | 10 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-stage bubble-column vapor mixture condensation23 Jun 2026US 12,661,605 B2King Fahd University of Petroleum and Minerals
- Method for industrially producing dialkyl carbonate and diol12 May 2026US 12,623,996 B2Asahi Kasei Kabushiki Kaisha
- Production system, production method and application of general-purpose high-purity chemicals3 Feb 2026US 12,539,471 B2Beijing University of Chemical Technology
- Equipment for production of butanol and octanol and triple-effect distillation method13 Jan 2026US 12,521,644 B2Tianjin Shenlan Chemical Technology Co., Ltd
- Separation process and apparatus23 Dec 2025US 12,503,419 B2Ineos Acetyls UK Limited
- Thermal desalination system3 Sep 2026US 2026/0257145 A1Research Foundation of the City University of New York
- Vapor-liquid contact tray with cans and swirlers in the cans and method6 Aug 2026US 2026/0224999 A1Koch-Glitsch, LP
- Distillation device and distillation method11 Jun 2026US 2026/0158411 A1Taiyo Nippon Sanso Corporation
- Methods and systems for direct-contact evaporation and condensation, and desalination methods and systems employing the same16 Apr 2026US 2026/0103402 A1Global Water Farms Corporation
- Reactive monomer separation device26 Mar 2026US 2026/0084075 A1LG Chem.Ltd.
Most cited
By later US patents
- Production of carboxylic acid ester by esterification and apparatus thereof79US 5,536,856 ADavy Process Technology Limited · 1996
- Distillation column70US 4,657,638 AUniversity of Florida · 1987
- De-entrainment tray and method of operation67US 5,972,171 AMobil Oil Corporation · 1999
- Apparatus for contacting a liquid with a gas60US 4,550,000 AShell Oil Company · 1985
- Contact structure for use in catalytic distillation55US 4,439,350 AChemical Research & Licensing Company · 1984