B01D 21/0057
With counter-current flow direction of liquid and solid particles
Official title: {with counter-current flow direction of liquid and solid particles}
B01D21/0057 (With counter-current flow direction of liquid and solid particles) appears on 96 US grants and 59 published applications in this corpus.
Search patents in B01D- Granted patents
- 96
- Published applications
- 59
- Assignees
- 72
- Inventors
- 170
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 4 |
| 2010 | 1 | 3 |
| 2011 | 0 | 5 |
| 2012 | 5 | 1 |
| 2013 | 2 | 3 |
| 2014 | 4 | 4 |
| 2015 | 3 | 2 |
| 2016 | 0 | 2 |
| 2017 | 3 | 3 |
| 2018 | 0 | 2 |
| 2019 | 0 | 3 |
| 2020 | 4 | 4 |
| 2021 | 3 | 4 |
| 2022 | 0 | 2 |
| 2023 | 4 | 3 |
| 2024 | 2 | 1 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Separator apparatus and feed arrangement for increased capacity4 Nov 2025US 12,458,980 B2FLSmidth A/S
- Separation apparatus and use thereof15 Apr 2025US 12,274,960 B2Hoffman-La Roche Inc.
- Settler with a settler plate that includes a hollow support18 Mar 2025US 12,251,648 B2Meurer Research, Inc.
- Container-type apparatus with a suspended particle system for wastewater treatment10 Dec 2024US 12,161,953 B2Wesdon-Tienda Environmental Sciences Co. Ltd.
- Fluid-borne particle classification system and method of use15 Oct 2024US 12,115,536 B2Iron Ore Company of Canada
- Particle separation apparatus and particle separation method6 Aug 2026US 2026/0225098 A1Canon Kabushiki Kaisha
- UV Mesh Cover for Clarifiers and Systems Thereof25 Dec 2025US 2025/0387734 A1Xylem Water Solutions Zelienople LLC
- Inline silicon deposition in a pickling plant20 Jun 2024US 2024/0200202 A1Primetals Technologies Austria GmbH
- Separation apparatus and use thereof21 Sep 2023US 2023/0294020 A1Hoffmann-La Roche Inc.
- Settler with a settler plate that includes a hollow support10 Aug 2023US 2023/0249103 A1Meurer Research, Inc.
Most cited
By later US patents
- Oil-water separator72US 4,123,365 ABallast-Nedam Groep N.V. · 1978
- Method of applying ozone and sonic energy to sterilize and oxidize waste water62US 4,003,832 ATII Corporation · 1977
- Method and installation for treating liquid by sedimentation using fine sand62US 4,927,543 AOmnium de Traitements et de Valorisation (OTV) · 1990
- Lamella gravity separator51US 4,889,624 AThe Graver Company · 1989
- Non-chemical water treatment method and apparatus employing ionized air purification technologies51US 6,740,245 B2Enerox Technology LLC · 2004