B01D 33/042
Whereby the filtration and squeezing-out take place between at least two filtering
Official title: {whereby the filtration and squeezing-out take place between at least two filtering bands}
B01D33/042 (Whereby the filtration and squeezing-out take place between at least two filtering) appears on 105 US grants and 28 published applications in this corpus.
Search patents in B01D- Granted patents
- 105
- Published applications
- 28
- Assignees
- 60
- Inventors
- 181
- Latest grant
- 2 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 4 | 2 |
| 2004 | 0 | 3 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 3 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Sludge dewatering system18 Jun 2019US 10,322,958 B2Metawater Co., Ltd.
- Belt press9 Apr 2019US 10,252,482 B2Ishigaki Company Limited
- Adjustable receptacles26 Sep 2024US 2024/0316482 A1Process Wastewater Technologies, LLC
- Solid-liquid separation device and filtration device7 Oct 2021US 2021/0308605 A1Tsukishima Kikai Co., Ltd.
- Adjustable receptacles30 Apr 2020US 2020/0129894 A1Process Wastewater Technologies, LLC
- Separation apparatus and method17 May 2018US 2018/0133628 A1Z-Filter Pty Ltd
- Elongate structure2 Nov 2017US 2017/0312662 A1Z-Filter Pty Ltd
Most cited
By later US patents
- Process and system for the dehydration of residues34US 4,142,971 ADegremont · 1979
- Method for dewatering sludge32US 4,101,400 AMachinefabriek W. Hubert & Co. B.V. · 1978
- Method and an apparatus for extracting a liquid from a sludge29US 5,021,166 A1991
- Slime and sludge dewatering26US 4,244,804 AInnova, Inc. · 1981
- Method for controlling and optimizing the operation of a perforated belt press for filtering slurry24US 4,707,272 AVon Roll AG · 1987