B01D 3/324
Tray constructions
Official title: {Tray constructions}
B01D3/324 (Tray constructions) appears on 175 US grants and 182 published applications in this corpus.
Search patents in B01D- Granted patents
- 175
- Published applications
- 182
- Assignees
- 82
- Inventors
- 366
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 2 | 9 |
| 2005 | 2 | 3 |
| 2006 | 6 | 4 |
| 2007 | 7 | 4 |
| 2008 | 3 | 3 |
| 2009 | 2 | 7 |
| 2010 | 1 | 5 |
| 2011 | 7 | 3 |
| 2012 | 2 | 14 |
| 2013 | 10 | 10 |
| 2014 | 8 | 6 |
| 2015 | 5 | 10 |
| 2016 | 6 | 15 |
| 2017 | 7 | 11 |
| 2018 | 10 | 8 |
| 2019 | 18 | 22 |
| 2020 | 12 | 3 |
| 2021 | 9 | 11 |
| 2022 | 7 | 6 |
| 2023 | 11 | 12 |
| 2024 | 9 | 4 |
| 2025 | 3 | 5 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for enhanced ethanol production14 Jul 2026US 12,679,794 B2ICM, Inc.
- Vapor-liquid contacting apparatus and process with downcomer at shell6 Jan 2026US 12,515,158 B2Uop LLC
- Column for thermal treatment of a mixture of compounds having a tendency to polymerization21 Oct 2025US 12,447,417 B2BASF SE
- Separation tower and method for treating condensed water17 Jun 2025US 12,330,086 B2Tianhua Institute of Chemical Machinery and Automation Co., Ltd
- Process and apparatus for the preparation of alkylene glycol6 May 2025US 12,291,496 B2Shell USA, Inc.
- Reactive monomer separation device26 Mar 2026US 2026/0084075 A1LG Chem.Ltd.
- Refinery apparatus26 Mar 2026US 2026/0084077 A1LG Chem.Ltd.
- Separation System19 Feb 2026US 2026/0048343 A1LG Chem.Ltd.
- Method of reducing ammonia in water waste streams9 Oct 2025US 2025/0312708 A1Koch Modular Process Systems, LLC
- Mass transfer tray, use thereof, column having the same, and thermal separation process12 Jun 2025US 2025/0186902 A1BASF SE
Most cited
By later US patents
- Co-current vapor-liquid contacting apparatus47US 7,424,999 B2Uop LLC · 2008
- Vapor-liquid contacting tray with vapor thrust means46US 4,174,363 AUnion Carbide Corporation · 1979
- Apparatus for increasing effective active area44US 5,547,617 AGlitsch, Inc. · 1996
- Quick opening removable tray sections for fluid contact40US 4,120,919 AGlitsch, Inc. · 1978
- Gas-liquid dispersion devices provided with partitioning members, gas-liquid contact apparatus, and wastewater treatment systems provided with the same34US 6,123,323 ANippon Shokubai Co., Ltd. · 2000