B01D 33/25
With hollow frames axially mounted on a hollow rotary shaft
Official title: with hollow frames axially mounted on a hollow rotary shaft
B01D33/25 (With hollow frames axially mounted on a hollow rotary shaft) appears on 9 US grants and 7 published applications in this corpus.
Search patents in B01D- Granted patents
- 9
- Published applications
- 7
- Assignees
- 8
- Inventors
- 27
- Latest grant
- 27 Apr 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Rotary filter arrangement having a plurality of hollow shafts27 Apr 2021US 10,987,633 B2GEA Mechanical Equipment GmbH
- Water floating object treatment device for sewage treatment6 Apr 2021US 10,967,314 B2
- Device including a compact spray nozzle for cleaning a filter cloth in a disc filter10 Apr 2018US 9,938,159 B2Veolia Water Solutions & Technologies Support
- Disc filter and a method of constructing a disc filter sector6 Jun 2017US 9,669,338 B2GL&V Luxembourg S.à r.l.
- Replaceable media filtration26 Oct 2004US 6,808,624 B1
- Water floating object treatment device for sewage treatment4 Mar 2021US 2021/0060464 A1
- Rotary filter arrangement having a plurality of hollow shafts15 Nov 2018US 2018/0326358 A1GEA Mechanical Equipment GmbH
- Disc filter and a method of constructing a disc filter sector17 Aug 2017US 2017/0232367 A1
- Disc filter and a method of constructing a disc filter sector15 Sep 2016US 2016/0263497 A1GL&V Luxembourg S.à r.l.
- Backpressure control for solid/fluid separation apparatus13 Aug 2015US 2015/0224428 A1GreenField Specialty Alcohols Inc.
Most cited
By later US patents
- Self-cleaning filter and vortexer68US 4,108,778 A1978
- Process and apparatus for the dewatering of solids in suspension8US 4,405,454 AKrauss-Maffei Aktiengesellschaft · 1983
- Pressure filter for liquids7US 5,362,393 AKarl Brieden Bau-Und Beteiligungs-KG · 1994
- Device including a compact spray nozzle for cleaning a filter cloth in a disc filter3US 9,938,159 B2Veolia Water Solutions & Technologies Support · 2018
- V-shaped trough filters, rotary assemblies thereof and methods of filtering therewith2US 4,681,689 AThe Dehydro Corporation · 1987