B01D 33/644
By pressure plates, membranes
Official title: {by pressure plates, membranes}
B01D33/644 (By pressure plates, membranes) appears on 29 US grants and 4 published applications in this corpus.
Search patents in B01D- Granted patents
- 29
- Published applications
- 4
- Assignees
- 23
- Inventors
- 40
- Latest grant
- 4 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Vibration unit assembly for a belt conveyor4 Jan 2022US 11,215,397 B2The University of Newcastle
- Method and apparatus for extracting liquid present in a humid mass23 Jan 2007US 7,166,229 B2Les Industries Fournier Inc.
- Solid-liquid separating apparatus28 Sep 2004US 6,796,435 B2Izumi Products Company
- Solid-liquid separating apparatus20 May 2003US 6,564,948 B2Izumi Products Company
- Arrangement for adjusting width of fibre web9 Apr 2002US 6,368,463 B1Metso Paper, Inc.
- Vibration Unit Assembly for a Belt Conveyor28 May 2020US 2020/0166274 A1The University of Newcastle
- Method and apparatus for extracting liquid present in a humid mass6 Jan 2005US 2005/0000917 A1Les Industries Fournier Inc.
- Solid-liquid separating apparatus3 Jan 2002US 2002/0000406 A1Izumi Products Company
- Solid-liquid separating apparatus13 Dec 2001US 2001/0050249 A1Izumi Products Company
Most cited
By later US patents
- Method and apparatus for the continuous filtration of material impregnated with liquid30US 4,153,550 ASociete Nouvelle des Filtres Philippe · 1979
- Solid-liquid separating apparatus21US 6,796,435 B2Izumi Products Company · 2004
- Device for continuous filtration and drying of a solid suspension15US 5,527,458 ABayer Aktiengesellschaft · 1996
- Sludge filtration device comprising a filter piston, and sludge treatment plant and sludge filtration process thereof14US 6,110,388 AElf Atochem S. A. · 2000
- Apparatus for treating a fibre suspension13US 4,750,340 AKamyr, Inc. · 1988