B01D 33/13
With surface cells independently connected to pressure distributors
Official title: with surface cells independently connected to pressure distributors
B01D33/13 (With surface cells independently connected to pressure distributors) appears on 7 US grants and 5 published applications in this corpus.
Search patents in B01D- Granted patents
- 7
- Published applications
- 5
- Assignees
- 9
- Inventors
- 10
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 0 | 1 |
| 2002 | 1 | 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 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter for a treatment apparatus21 Apr 2026US 12,605,658 B2Fresh Works Ltd
- Filter drum for a vacuum and/or pressure filtration device20 Oct 2020US 10,807,024 B2ANDRITZ KMPT GmbH
- Frame-type disc filter with bypass water control for preventing bypass water from being used in backwashing17 Mar 2020US 10,589,201 B2Veolia Water Solutions & Technologies Support
- Rotating device for continuously filtering a liquid such as a solution containing a precipitate3 Dec 2002US 6,488,849 B2Compagnie Generale des Matieres Nucleaires
- Apparatus for washing pulp26 May 1992US 5,116,423 AA. Alhstrom Corporation
- Filter for a treatment apparatus6 Aug 2026US 2026/0225010 A1Fresh Works Ltd
- Filter for a treatment apparatus2 Nov 2023US 2023/0347267 A1Fresh Works Ltd
- Filter Drum for a Vacuum and/or Pressure Filtration Device5 Dec 2019US 2019/0366245 A1ANDRITZ KMPT GmbH
- Frame-type disc filter with bypass water control for preventing bypass water from being used in backwashing22 Aug 2019US 2019/0255468 A1Veolia Water Solutions & Technologies Support
- Rotating device for continuously filtering a liquid such as a solution containing a precipitate27 Dec 2001US 2001/0054581 A1Compagnie Generale des Matieres Nucleaires
Most cited
By later US patents
- Apparatus for washing pulp20US 5,116,423 AA. Alhstrom Corporation · 1992
- Frame-type disc filter with bypass water control for preventing bypass water from being used in backwashing8US 10,589,201 B2Veolia Water Solutions & Technologies Support · 2020
- Method and apparatus for washing pulp7US 4,919,158 AA. Ahlstrom Corporation · 1990
- Rotating device for continuously filtering a liquid such as a solution containing a precipitate5US 6,488,849 B2Compagnie Generale des Matieres Nucleaires · 2002
- Rotary drum filter4US 4,309,288 AExxon Research & Engineering Co. · 1982