B01D 24/4678
Using free vortex flow
Official title: {using free vortex flow}
B01D24/4678 (Using free vortex flow) appears on 9 US grants and 5 published applications in this corpus.
Search patents in B01D- Granted patents
- 9
- Published applications
- 5
- Assignees
- 9
- Inventors
- 11
- Latest grant
- 12 Jul 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 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 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Media bed filters for filtering fine particles from a raw liquid flow and method of using the same12 Jul 2016US 9,387,418 B2Neptune-Benson, LLC
- Method for cleaning sand in a sand bed23 Oct 2001US 6,306,309 B2Weda Poolcleaner AB
- Apparatus for cleaning a pool bottom having a sand bed8 May 2001US 6,228,256 B1Weda Poolcleaner AB
- Filter system and scrubber30 Oct 1990US 4,966,698 A
- Filter apparatus and method29 Nov 1988US 4,787,987 A
- Media Bed Filters for Filtering Fine Particles from a Raw Liquid Flow and Method of Using the Same5 Jan 2017US 2017/0001131 A1Neptune-Benson, LLC
- Eductor circulated nutshell media water filter14 Apr 2016US 2016/0101991 A1
- Media bed filters for filtering fine particles from a raw liquid flow and method of using the same9 Jul 2015US 2015/0190738 A1Sonitec-Vortisand Technologies Inc.
- Media bed filters for filtering fine particles from a raw liquid flow and method of using the same16 Jan 2014US 2014/0014598 A1Sonitec-Vortisand Inc.
- Method and apparatus for cleaning a pool bottom having a sand bed28 Jun 2001US 2001/0004974 A1Weda Poolcleaner AB
Most cited
By later US patents
- Filter apparatus and method23US 4,787,987 A1988
- Apparatus for cleaning a pool bottom having a sand bed21US 6,228,256 B1Weda Poolcleaner AB · 2001
- Filter system and scrubber13US 4,966,698 A1990
- Water purification device9US 4,460,467 ATakara Kogyo Co., Ltd. · 1984
- Process for concentrating a suspension of microscopic particles7US 4,719,020 AMornex Limited · 1988