B01D 33/46
By scrapers, brushes nozzles or the like acting on the cake-side of
Official title: by scrapers, brushes {nozzles} or the like acting on the cake-side of the filtering element {(B01D33/503 takes precedence)}
B01D33/46 (By scrapers, brushes nozzles or the like acting on the cake-side of) appears on 536 US grants and 277 published applications in this corpus.
Search patents in B01D- Granted patents
- 536
- Published applications
- 277
- Assignees
- 346
- Inventors
- 923
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 12 | 0 |
| 1978 | 9 | 0 |
| 1979 | 12 | 0 |
| 1980 | 11 | 0 |
| 1981 | 18 | 0 |
| 1982 | 11 | 0 |
| 1983 | 8 | 0 |
| 1984 | 10 | 0 |
| 1985 | 13 | 0 |
| 1986 | 9 | 0 |
| 1987 | 18 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 13 | 0 |
| 1991 | 12 | 0 |
| 1992 | 12 | 0 |
| 1993 | 19 | 0 |
| 1994 | 15 | 0 |
| 1995 | 21 | 0 |
| 1996 | 11 | 0 |
| 1997 | 14 | 0 |
| 1998 | 12 | 0 |
| 1999 | 14 | 0 |
| 2000 | 14 | 0 |
| 2001 | 24 | 4 |
| 2002 | 5 | 12 |
| 2003 | 12 | 6 |
| 2004 | 8 | 10 |
| 2005 | 4 | 11 |
| 2006 | 10 | 7 |
| 2007 | 1 | 8 |
| 2008 | 7 | 8 |
| 2009 | 2 | 5 |
| 2010 | 9 | 14 |
| 2011 | 8 | 10 |
| 2012 | 5 | 9 |
| 2013 | 8 | 12 |
| 2014 | 3 | 13 |
| 2015 | 3 | 20 |
| 2016 | 10 | 12 |
| 2017 | 7 | 9 |
| 2018 | 11 | 6 |
| 2019 | 15 | 13 |
| 2020 | 12 | 13 |
| 2021 | 6 | 14 |
| 2022 | 9 | 18 |
| 2023 | 8 | 13 |
| 2024 | 17 | 11 |
| 2025 | 11 | 10 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Brine injection system with improved filtering system8 Sep 2026US 12,728,372 B2Gea Food Solutions Bakel B.V.
- Self-cleaning intake filter9 Jun 2026US 12,649,118 B2Wairere Research Limited
- Filtering device and washing machine12 May 2026US 12,624,492 B2Haier Smart Home Co., Ltd.
- Conveyor-belt filtering device for mechanically cleaning a liquid21 Apr 2026US 12,605,659 B2FSM Frankenberger GmbH
- Rotary drum filtering machine for algae filtration10 Feb 2026US 12,544,693 B2Algaecore Technologies Ltd
- Device for cleaning liquid media using vacuum belt filters1 Oct 2026US 2026/0295478 A1
- Device and method for automatically recovering logging data storage1 Oct 2026US 2026/0295480 A1China Petroleum & Chemical Corporation
- Filter screen, tubular filter and filter device30 Jul 2026US 2026/0216624 A1Maag Ettlinger GmbH
- Device and method for separating a liquid from a feedstock23 Jul 2026US 2026/0208075 A1Herbold Meckesheim GmbH
- Backwash Orifice Arrangement18 Jun 2026US 2026/0166455 A1Xylem Water Solution U.S.A., Inc.
Most cited
By later US patents
- Rotary drum filter with reciprocating nozzle means70US 5,470,472 ADorr-Oliver Incorporated · 1995
- Scraper blade assembly60US 5,865,997 AAshbrook Corporation · 1999
- Rotary drum type device for separating solid particles from a liquid59US 5,618,424 ANagaoka International Corporation · 1997
- Drilling mud cleaning apparatus56US 4,350,591 A1982
- Apparatus for mechanical purification of waste water54US 4,639,315 AMecapec S.A. · 1987