B01D 33/76
For discharging the filter cake
Official title: for discharging the filter cake, e.g. chutes
B01D33/76 (For discharging the filter cake) appears on 233 US grants and 119 published applications in this corpus.
Search patents in B01D- Granted patents
- 233
- Published applications
- 119
- Assignees
- 167
- Inventors
- 400
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 12 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 12 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 4 | 2 |
| 2004 | 3 | 4 |
| 2005 | 1 | 5 |
| 2006 | 4 | 6 |
| 2007 | 2 | 7 |
| 2008 | 3 | 4 |
| 2009 | 2 | 2 |
| 2010 | 3 | 5 |
| 2011 | 3 | 8 |
| 2012 | 2 | 4 |
| 2013 | 5 | 5 |
| 2014 | 5 | 5 |
| 2015 | 5 | 8 |
| 2016 | 4 | 5 |
| 2017 | 6 | 9 |
| 2018 | 3 | 5 |
| 2019 | 4 | 3 |
| 2020 | 4 | 5 |
| 2021 | 5 | 5 |
| 2022 | 6 | 6 |
| 2023 | 3 | 4 |
| 2024 | 2 | 0 |
| 2025 | 4 | 5 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter for a treatment apparatus21 Apr 2026US 12,605,658 B2Fresh Works Ltd
- Conveyor-belt filtering device for mechanically cleaning a liquid21 Apr 2026US 12,605,659 B2FSM Frankenberger GmbH
- Stormwater treatment device23 Sep 2025US 12,420,219 B2Contech Engineered Solutions LLC
- Spiral conveyor and filter unit19 Aug 2025US 12,390,897 B2Tokyo Seimitsu Hatsujo Co., Ltd.
- Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water18 Mar 2025US 12,251,653 B2
- Filter for a treatment apparatus6 Aug 2026US 2026/0225010 A1Fresh Works Ltd
- Algae harvesting device23 Jul 2026US 2026/0206700 A1University of Technology, Sydney
- Device and method for separating a liquid from a feedstock23 Jul 2026US 2026/0208075 A1Herbold Meckesheim GmbH
- Machine chip and coolant flow cleaning system for endless belt conveyor9 Jul 2026US 2026/0192409 A1Mayfran International B.V.
- Slurry treatment apparatus12 Mar 2026US 2026/0070830 A1Vietti Slurrytec (Pty) Ltd
Most cited
By later US patents
- Filtration method and apparatus86US 4,790,942 AMembrex, Inc. · 1988
- Small volume rotary filter86US 4,876,013 AMembrex, Inc. · 1989
- Rotary filtration device and filter pack therefor74US 5,254,250 AMembrex, Inc. · 1993
- Rotary disc filtration device73US 5,143,630 AMembrex, Inc. · 1992
- Vibratory screening machine58US 6,155,428 ARig Technology Limited · 2000