B01D 33/646
By pressure rollers
Official title: {by pressure rollers}
B01D33/646 (By pressure rollers) appears on 96 US grants and 27 published applications in this corpus.
Search patents in B01D- Granted patents
- 96
- Published applications
- 27
- Assignees
- 59
- Inventors
- 166
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 1 | 0 |
| 1995 | 10 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 2 | 3 |
| 2012 | 2 | 2 |
| 2013 | 3 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 4 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water18 Mar 2025US 12,251,653 B2
- Vibration unit assembly for a belt conveyor4 Jan 2022US 11,215,397 B2The University of Newcastle
- Sludge dewatering system18 Jun 2019US 10,322,958 B2Metawater Co., Ltd.
- Belt press9 Apr 2019US 10,252,482 B2Ishigaki Company Limited
- Wet dust extractor with a separator for dewatering particulate matter suspended in water17 Jul 2018US 10,022,662 B1
- Roller filtration apparatus5 Oct 2023US 2023/0311030 A1Danmarks Tekniske Universitet
- Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water27 Oct 2022US 2022/0339564 A1Essa Co., Ltd.
- Vibration Unit Assembly for a Belt Conveyor28 May 2020US 2020/0166274 A1The University of Newcastle
- Roller filtration apparatus14 May 2020US 2020/0147531 A1Danmarks Tekniske Universitet
- Separation apparatus and method17 May 2018US 2018/0133628 A1Z-Filter Pty Ltd
Most cited
By later US patents
- Rotary drum type device for separating solid particles from a liquid59US 5,618,424 ANagaoka International Corporation · 1997
- Process and system for the dehydration of residues34US 4,142,971 ADegremont · 1979
- Method and apparatus for the continuous filtration of material impregnated with liquid30US 4,153,550 ASociete Nouvelle des Filtres Philippe · 1979
- Method and apparatus for dewatering23US 5,795,484 A1998
- Method and apparatus for separating particles from a liquid21US 8,092,691 B2Univenture, Inc. · 2012