B01D 25/287
By compression using pistons
Official title: {by compression using pistons}
B01D25/287 (By compression using pistons) appears on 8 US grants and 4 published applications in this corpus.
Search patents in B01D- Granted patents
- 8
- Published applications
- 4
- Assignees
- 4
- Inventors
- 22
- Latest grant
- 23 Feb 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electromagnetic-force-based dewatering for sewage sludge reduction23 Feb 2021US 10,927,027 B2China Jiliang University
- Electromagnetic-force-based dewatering for sewage sludge reduction3 Dec 2019US 10,494,285 B2China Jiliang University
- Method and apparatus for the solid-liquid-separation of material mixtures and suspensions14 May 2013US 8,440,082 B2
- Method and apparatus for the solid-liquid-separation of material mixtures and suspensions5 Feb 2013US 8,366,942 B2
- Method and apparatus for removing water from sludge and similar substances26 Jan 1999US 5,863,429 A
- Electromagnetic-force-based dewatering for sewage sludge reduction13 Feb 2020US 2020/0048132 A1China Jiliang University
- Electromagnetic-force-based dewatering for sewage sludge reduction6 Dec 2018US 2018/0346363 A1China Jiliang University
- Method and apparatus for the solid-liquid-separation of material mixtures and suspensions3 Jan 2013US 2013/0001150 A1
- Method and apparatus for the solid-liquid-separation of material mixtures and suspensions18 Mar 2010US 2010/0065514 A1
Most cited
By later US patents
- Procedure and chamber filter press for dewatering slurries and similar substances10US 5,051,194 A1991
- Method and apparatus for removing water from sludge and similar substances9US 5,863,429 A1999
- Filter press-type filtering apparatus using rigid filter element4US 4,816,147 ABrasserie Piedboeuf · 1989
- Electromagnetic-force-based dewatering for sewage sludge reduction1US 10,494,285 B2China Jiliang University · 2019
- Filter plate for presses for pressing cocoa pastes1US 5,169,523 ACarle & Montanari S.p.A. · 1992