B01D 21/0045
Plurality of essentially parallel plates
Official title: {Plurality of essentially parallel plates}
B01D21/0045 (Plurality of essentially parallel plates) appears on 406 US grants and 281 published applications in this corpus.
Search patents in B01D- Granted patents
- 406
- Published applications
- 281
- Assignees
- 254
- Inventors
- 673
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 12 | 0 |
| 1979 | 10 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 12 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 10 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 2 |
| 2002 | 2 | 4 |
| 2003 | 7 | 7 |
| 2004 | 5 | 14 |
| 2005 | 8 | 10 |
| 2006 | 7 | 4 |
| 2007 | 8 | 6 |
| 2008 | 3 | 2 |
| 2009 | 3 | 13 |
| 2010 | 8 | 7 |
| 2011 | 4 | 8 |
| 2012 | 9 | 11 |
| 2013 | 7 | 8 |
| 2014 | 8 | 17 |
| 2015 | 6 | 8 |
| 2016 | 10 | 13 |
| 2017 | 19 | 15 |
| 2018 | 14 | 20 |
| 2019 | 8 | 16 |
| 2020 | 22 | 22 |
| 2021 | 16 | 18 |
| 2022 | 13 | 15 |
| 2023 | 21 | 11 |
| 2024 | 6 | 15 |
| 2025 | 12 | 7 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Removal device15 Sep 2026US 12,734,466 B2Aalberts hfc B.V.
- Device and method for coalescence separation18 Aug 2026US 12,708,865 B2ENI S. p. A.
- Plate assembly and method of manufacturing for use in water treatment14 Jul 2026US 12,678,714 B2Jim Myers & Sons, Inc.
- Bi-directional filter19 May 2026US 12,629,620 B2Combipro AS
- Separation of fluids containing solids28 Apr 2026US 12,611,678 B2World Water Works, Inc.
- Systems for Grit Removal1 Oct 2026US 2026/0295473 A1
- Separation of fluids containing solids13 Aug 2026US 2026/0233236 A1World Water Works, Inc.
- Plate assembly and method of manufacturing for use in water treatment6 Aug 2026US 2026/0225004 A1Jim Myers & Sons, Inc.
- Scum removal system in sewage treatment plant30 Jul 2026US 2026/0217571 A1Utsunomiya Kogyo Co., Ltd.
- High rate thickener and eductors therefor23 Jul 2026US 2026/0209097 A1Marmon Industrial Water LLC
Most cited
By later US patents
- Waste treatment system having integral intrachannel clarifier111US 4,446,018 AArmco Inc. · 1984
- Oil-water separator72US 4,123,365 ABallast-Nedam Groep N.V. · 1978
- System and method for separating solids from a fluid stream71US 6,506,310 B2DEL Corporation · 2003
- Process and apparatus for the chemical-mechanical treatment and purification of ground waters, surface waters and effluents69US 4,388,195 APassavant-Werke Michelbacher Hutte · 1983
- Static deaeration conditioner for processing of bitumen froth65US 6,800,116 B2Suncor Energy Inc. · 2004