B01D 3/34
Distillation or related exchange processes in which liquids are contacted with gaseous
Official title: with one or more auxiliary substances
B01D3/34 (Distillation or related exchange processes in which liquids are contacted with gaseous) appears on 1,552 US grants and 1,309 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,552
- Published applications
- 1,309
- Assignees
- 867
- Inventors
- 3,407
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 24 | 0 |
| 1978 | 23 | 0 |
| 1979 | 21 | 0 |
| 1980 | 26 | 0 |
| 1981 | 19 | 0 |
| 1982 | 29 | 0 |
| 1983 | 21 | 0 |
| 1984 | 20 | 0 |
| 1985 | 21 | 0 |
| 1986 | 19 | 0 |
| 1987 | 18 | 0 |
| 1988 | 22 | 0 |
| 1989 | 18 | 0 |
| 1990 | 19 | 0 |
| 1991 | 16 | 0 |
| 1992 | 37 | 0 |
| 1993 | 24 | 0 |
| 1994 | 25 | 0 |
| 1995 | 17 | 0 |
| 1996 | 17 | 0 |
| 1997 | 28 | 0 |
| 1998 | 28 | 0 |
| 1999 | 20 | 0 |
| 2000 | 24 | 0 |
| 2001 | 20 | 5 |
| 2002 | 17 | 24 |
| 2003 | 14 | 23 |
| 2004 | 17 | 31 |
| 2005 | 21 | 27 |
| 2006 | 12 | 22 |
| 2007 | 16 | 16 |
| 2008 | 23 | 18 |
| 2009 | 19 | 24 |
| 2010 | 15 | 42 |
| 2011 | 21 | 34 |
| 2012 | 15 | 26 |
| 2013 | 34 | 46 |
| 2014 | 26 | 34 |
| 2015 | 41 | 59 |
| 2016 | 31 | 58 |
| 2017 | 39 | 65 |
| 2018 | 61 | 96 |
| 2019 | 95 | 120 |
| 2020 | 102 | 96 |
| 2021 | 73 | 84 |
| 2022 | 58 | 98 |
| 2023 | 62 | 78 |
| 2024 | 59 | 92 |
| 2025 | 68 | 56 |
| 2026 | 39 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for removing HCL in chlorination reaction29 Sep 2026US 12,746,484 B2Hanwha Solutions Corporation
- VE enrichment system22 Sep 2026US 12,741,233 B2Jj-Lurgi Engineering Equipment (Shanghai) Co. Ltd
- Recovering mono-ethylene glycol8 Sep 2026US 12,729,173 B2Changchun Meihe Science and Technology Development Co., Ltd.
- Method for purifying a feedstock resulting from a method for depolymerizing styrene compounds11 Aug 2026US 12,703,670 B2Compagnie Generale Des Etablissements Michelin
- Latent heat and condensation exchanger11 Aug 2026US 12,704,076 B2Sustainable Energy Solutions, LLC
- Azeotropic compositions comprising hydrogen fluoride8 Oct 2026US 2026/0308089 A1The Chemours Company Fc, LLC
- Solvent vapors absorption system reducing contaminations8 Oct 2026US 2026/0308476 A1Desmet Belgium
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297630 A1Braskem S/A
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297631 A1Braskem S/A
- Constant-temperature dual-cycle material separation method and use thereof17 Sep 2026US 2026/0273433 A1
Most cited
By later US patents
- Separation of ethyl acetate from ethanol and water by extractive distillation156US 4,379,028 A1983
- Low energy extractive distillation process for producing anhydrous ethanol152US 5,035,776 AUniversity of Massachusetts · 1991
- Distillative separations of gas mixtures containing methane, carbon dioxide and other components129US 4,462,814 AKoch Process Systems, Inc. · 1984
- Window insulator115US 4,535,828 A1985
- Separation of ethanol mixtures by extractive distillation105US 6,375,807 B12002