B01D 33/648
By screws
Official title: {by screws}
B01D33/648 (By screws) appears on 25 US grants and 10 published applications in this corpus.
Search patents in B01D- Granted patents
- 25
- Published applications
- 10
- Assignees
- 17
- Inventors
- 34
- Latest grant
- 11 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Solid-liquid separator and solid-liquid separation system11 Jan 2022US 11,219,849 B2Tsurumi Manufacturing Co., Ltd.
- Internally fed drum filter for treating waste water comprising an inlet distribution arrangement5 Jun 2018US 9,987,573 B2Nijhuis Water Technology B.V.
- Rotating separator7 Jun 2016US 9,358,484 B2Purfil ApS
- Screw separator20 Oct 2015US 9,162,411 B2Uts Biogastechnik GmbH
- Screw separator22 Sep 2015US 9,138,956 B2Uts Biogastechnik GmbH
- Solid-Liquid Separator and Solid-Liquid Separation System24 Sep 2020US 2020/0298151 A1Tsurumi Manufacturing Co., Ltd.
- Internally fed drum filter for treating waste water comprising an inlet distribution arrangement25 Jun 2015US 2015/0174512 A1Nijhuis Water Technology B.V.
- Rotating Separator19 Mar 2015US 2015/0076084 A1Purfill Aps
- Three-stage slurry processing apparatus and method2 May 2013US 2013/0105409 A1
- Sludge dehydrating apparatus13 Dec 2012US 2012/0312177 A1Ark, Inc.
Most cited
By later US patents
- Screw press38US 6,634,508 B1Ishigaki Company Limited · 2003
- Method of continuous centrifugal removal of residual liquid waste from recyclable container material27US 5,160,441 A1992
- Device for removing screened or sifted material from liquid flowing in a gutter18US 4,634,524 AHans Huber GmbH & Co. KG · 1987
- Apparatus for separating liquids and solids17US 5,110,461 A1992
- Sewage screening apparatus16US 6,294,085 B1Jones & Attwood Limited · 2001