B01D 3/328
Sealing between the column and the trays
Official title: {Sealing between the column and the trays}
B01D3/328 (Sealing between the column and the trays) appears on 22 US grants and 16 published applications in this corpus.
Search patents in B01D- Granted patents
- 22
- Published applications
- 16
- Assignees
- 14
- Inventors
- 41
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 4 |
| 2020 | 4 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Column for thermal treatment of a mixture of compounds having a tendency to polymerization21 Oct 2025US 12,447,417 B2BASF SE
- Apparatus for a dividing wall column in an isomerization unit5 Sep 2023US 11,745,116 B2
- Apparatus and method installing a packing disk of a structured packing into a vessel of a material-exchange column2 Mar 2021US 10,933,345 B2Linde Aktiengesellschaft
- Annular divided wall column23 Feb 2021US 10,928,129 B2Praxair Technology, Inc.
- Annular divided wall column with ring shaped collectors and distributers15 Dec 2020US 10,866,025 B2Praxair Technology, Inc.
- Column for thermal treatment of a mixture of compounds having a tendency to polymerization16 May 2024US 2024/0157269 A1BASF SE
- Apparatus for a dividing wall column in an isomerization unit6 Apr 2023US 2023/0105091 A1
- Annular divided wall column14 May 2020US 2020/0149809 A1Praxair Technology, Inc.
- Annular divided wall column with ring shaped collectors and distributers14 May 2020US 2020/0149810 A1Praxair Technology, Inc.
- Apparatus and method installing a packing disk of a structured packing into a vessel of a material-exchange column21 Mar 2019US 2019/0083899 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Contact towers with leak-proof support of improved plate subassembly20US 3,997,633 A1976
- Tower packing elements17US 4,197,264 AFractionation Research, Inc. · 1980
- Split ring seal8US 7,267,330 B1Jaeger Products, Inc. · 2007
- Expansion ring for mass transfer column and method employing same7US 7,055,810 B2Koch-Glitsch, LP · 2006
- Method of and apparatus for cartridge tray sealing6US 5,118,449 AGlitsch, Inc. · 1992