B01J 2219/32244
Essentially circular apertures
B01J2219/32244 (Essentially circular apertures) appears on 88 US grants and 53 published applications in this corpus.
Search patents in B01J- Granted patents
- 88
- Published applications
- 53
- Assignees
- 41
- Inventors
- 153
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 6 | 5 |
| 2003 | 9 | 4 |
| 2004 | 3 | 3 |
| 2005 | 1 | 2 |
| 2006 | 4 | 2 |
| 2007 | 0 | 1 |
| 2008 | 3 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 0 |
| 2018 | 2 | 3 |
| 2019 | 1 | 5 |
| 2020 | 2 | 2 |
| 2021 | 3 | 6 |
| 2022 | 4 | 2 |
| 2023 | 6 | 3 |
| 2024 | 2 | 1 |
| 2025 | 2 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reactor for the synthesis of urea14 Jul 2026US 12,679,803 B2Casale SA
- Packing element, structured packing and use of structured packing14 Apr 2026US 12,599,889 B2East China University of Science and Technology
- High surface-area contactor media for improved gas-liquid contactors18 Nov 2025US 12,472,461 B2Intrls, Inc.
- Countercurrent contacting devices11 Feb 2025US 12,220,674 B2Koch-Glitsch, LP
- Countercurrent contacting devices and method of manufacture12 Nov 2024US 12,138,602 B2Koch-Glitsch, LP
- High surface-area contactor media for improved gas-liquid contactors19 Mar 2026US 2026/0077297 A1Intrnls, Inc.
- High surface-area contactor media for improved gas-liquid contactors19 Jun 2025US 2025/0196056 A1Intrls, Inc.
- Reactor for the synthesis of urea24 Apr 2025US 2025/0128232 A1Casale SA
- Packing element, structured packing and use of structured packing16 May 2024US 2024/0157326 A1East China University of Science and Technology
- Countercurrent contacting devices28 Sep 2023US 2023/0302419 A1Koch-Glitsch, LP
Most cited
By later US patents
- Packing element for an exchange column128US 4,296,050 ASulzer Brothers Limited · 1981
- Tower packing material and method91US 4,604,247 AGlitsch, Inc. · 1986
- Method of and apparatus for intermediate lamella vapor liquid contact83US 4,597,916 AGlitsch, Inc. · 1986
- Catalyst structure and method of fischer-tropsch synthesis62US 6,558,634 B1Battelle Memorial Institute · 2003
- Structured tower packing61US 4,950,430 AGlitsch, Inc. · 1990