B01D 3/22
With horizontal sieve plates or grids
Official title: with horizontal sieve plates or grids; Construction of sieve plates or grids
B01D3/22 (With horizontal sieve plates or grids) appears on 263 US grants and 155 published applications in this corpus.
Search patents in B01D- Granted patents
- 263
- Published applications
- 155
- Assignees
- 117
- Inventors
- 478
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 6 |
| 2002 | 9 | 5 |
| 2003 | 6 | 12 |
| 2004 | 9 | 13 |
| 2005 | 5 | 8 |
| 2006 | 4 | 6 |
| 2007 | 10 | 5 |
| 2008 | 3 | 3 |
| 2009 | 6 | 8 |
| 2010 | 5 | 1 |
| 2011 | 2 | 2 |
| 2012 | 4 | 3 |
| 2013 | 0 | 8 |
| 2014 | 1 | 5 |
| 2015 | 7 | 8 |
| 2016 | 6 | 11 |
| 2017 | 4 | 7 |
| 2018 | 6 | 5 |
| 2019 | 11 | 8 |
| 2020 | 5 | 4 |
| 2021 | 7 | 6 |
| 2022 | 2 | 5 |
| 2023 | 3 | 5 |
| 2024 | 4 | 3 |
| 2025 | 2 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Production system, production method and application of general-purpose high-purity chemicals3 Feb 2026US 12,539,471 B2Beijing University of Chemical Technology
- Separation process and apparatus23 Dec 2025US 12,503,419 B2Ineos Acetyls UK Limited
- Distillation tray having through holes with different diameters15 Jul 2025US 12,358,058 B2Sabic Global Technologies B.V.
- Fractionation tray with adjustable open area for cleaning and/or throughput control3 Dec 2024US 12,157,076 B2Crown Iron Works Company
- Distillation tray having through holes with different diameters25 Jun 2024US 12,017,165 B2Sabic Global Technologies B.V.
- 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.
- Reactive monomer separation device26 Mar 2026US 2026/0084076 A1LG Chem.Ltd.
- Distillation tray having through holes with different diameters9 Oct 2025US 2025/0312855 A1Sabic Global Technologies B.V.
- Reactor for the synthesis of urea24 Apr 2025US 2025/0128232 A1Casale SA
Most cited
By later US patents
- Apparatus for contacting a liquid with a gas60US 4,550,000 AShell Oil Company · 1985
- Hinged pressure relief tray54US 4,133,852 AExxon Research & Engineering Co. · 1979
- Downcomer-tray assembly and method54US 4,956,127 AGlitsch, Inc. · 1990
- System for monitoring and controlling unit operations that include distillation53US 7,603,889 B2MEAS France · 2009
- Gas-liquid contacting tray with improved inlet bubbling means52US 4,499,035 AUnion Carbide Corporation · 1985