B01D 33/09
With surface cells independently connected to pressure distributors
Official title: with surface cells independently connected to pressure distributors
B01D33/09 (With surface cells independently connected to pressure distributors) appears on 60 US grants and 27 published applications in this corpus.
Search patents in B01D- Granted patents
- 60
- Published applications
- 27
- Assignees
- 34
- Inventors
- 99
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 4 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 3 | 2 |
| 2020 | 3 | 0 |
| 2021 | 0 | 5 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drum washer with gravity assist drainage17 Feb 2026US 12,551,825 B2Andritz Inc.
- Device and method for measuring a filter cake thickness18 Feb 2025US 12,228,391 B2BHS-Sonthofen GmbH
- Rotary drum vacuum filter with a throttling valve14 May 2024US 11,980,837 B2Valmet Corporation
- Device and method for detecting wear of a separating element18 Jul 2023US 11,701,604 B2BHS-Sonthofen GmbH
- Solid-liquid separation processes using a large pore filter26 Apr 2022US 11,312,678 B2Ineos US Chemicals Company
- Drum washer with gravity assist drainage28 Sep 2023US 2023/0302384 A1Andritz Inc.
- Apparatus for reducing pressure fluctuation17 Feb 2022US 2022/0047974 A1BHS-Sonthofen GmbH
- Rotary pressure filter module16 Dec 2021US 2021/0387116 A1BHS-Sonthofen GmbH
- Vacuum filter19 Aug 2021US 2021/0252436 A1Valmet Corporation
- Solid-Liquid Separation Processes Using a Large Pore Filter12 Aug 2021US 2021/0246096 A1Ineos US Chemicals Company
Most cited
By later US patents
- Process for recovering crystals from a slurry46US 6,500,347 B2Mitsubishi Gas Chemical Company, Inc. · 2002
- Process for removal of impurities from an oxidizer purge stream33US 7,273,559 B2Eastman Chemical Company · 2007
- Rotary drum filter23US 4,346,008 AExxon Research & Engineering Co. · 1982
- Drainage deck assembly for rotary vacuum drum filter22US 4,276,169 ADorr-Oliver Incorporated · 1981
- Procedure and apparatus for cellulose washing21US 4,292,123 AEnso-Gutzeit Osakeytio · 1981