B01D 33/044
Filters with filtering elements which move during the filtering operation: with filtering
Official title: with filtering bands or the like supported on cylinders which are pervious for filtering
B01D33/044 (Filters with filtering elements which move during the filtering operation: with filtering) appears on 91 US grants and 56 published applications in this corpus.
Search patents in B01D- Granted patents
- 91
- Published applications
- 56
- Assignees
- 75
- Inventors
- 195
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 3 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 7 |
| 2015 | 0 | 4 |
| 2016 | 2 | 3 |
| 2017 | 2 | 5 |
| 2018 | 4 | 4 |
| 2019 | 3 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 4 | 8 |
| 2023 | 4 | 2 |
| 2024 | 5 | 2 |
| 2025 | 3 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Conveyor-belt filtering device for mechanically cleaning a liquid21 Apr 2026US 12,605,659 B2FSM Frankenberger GmbH
- Fluid and solid material separator9 Dec 2025US 12,491,456 B2Schlumberger Technology Corporation
- Water treatment method and water treatment apparatus29 Jul 2025US 12,371,357 B2Kubota Corporation
- Phosphorous extraction and recovery system20 May 2025US 12,304,843 B2University of Maryland, Baltimore County
- Method and apparatus for processing magnetite1 Oct 2024US 12,103,013 B2Ib Operations Pty Ltd
- Device for cleaning liquid media using vacuum belt filters1 Oct 2026US 2026/0295478 A1
- Apparatus and method for solid-liquid separation13 Aug 2026US 2026/0233134 A1Betolar Oyj
- Micro-fibre filter cartridge and filter unit23 Jul 2026US 2026/0208078 A1
- Reaction and separation apparatus13 Feb 2025US 2025/0050243 A1Bioly Limited
- Fluid and Solid Material Separator2 Jan 2025US 2025/0001334 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Single pass mud rejuvenation system and method50US 4,639,258 A1987
- Stripping device for rotary filters45US 5,133,863 ABayer Aktiengesellschaft · 1992
- Single pass mud rejuvenation system and method28US 4,750,920 ARamteck Systems, Inc. · 1988
- Algae harvester24US 3,951,805 A1976
- Device for dewatering sludge or the like20US 4,181,616 A1980