B01D 33/58
Handling the filter cake in the filter for purposes other than for
Official title: Handling the filter cake in the filter for purposes other than for regenerating (B01D33/76 takes precedence){the filter cake remaining on the filtering element}
B01D33/58 (Handling the filter cake in the filter for purposes other than for) appears on 443 US grants and 151 published applications in this corpus.
Search patents in B01D- Granted patents
- 443
- Published applications
- 151
- Assignees
- 273
- Inventors
- 731
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 10 | 0 |
| 1979 | 11 | 0 |
| 1980 | 8 | 0 |
| 1981 | 10 | 0 |
| 1982 | 10 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 13 | 0 |
| 1989 | 21 | 0 |
| 1990 | 21 | 0 |
| 1991 | 15 | 0 |
| 1992 | 17 | 0 |
| 1993 | 22 | 0 |
| 1994 | 14 | 0 |
| 1995 | 20 | 0 |
| 1996 | 16 | 0 |
| 1997 | 12 | 0 |
| 1998 | 11 | 0 |
| 1999 | 12 | 0 |
| 2000 | 14 | 0 |
| 2001 | 13 | 7 |
| 2002 | 12 | 7 |
| 2003 | 6 | 6 |
| 2004 | 6 | 8 |
| 2005 | 1 | 4 |
| 2006 | 4 | 4 |
| 2007 | 4 | 4 |
| 2008 | 4 | 3 |
| 2009 | 1 | 3 |
| 2010 | 6 | 6 |
| 2011 | 3 | 10 |
| 2012 | 5 | 9 |
| 2013 | 7 | 5 |
| 2014 | 1 | 6 |
| 2015 | 4 | 9 |
| 2016 | 6 | 3 |
| 2017 | 4 | 3 |
| 2018 | 7 | 13 |
| 2019 | 8 | 6 |
| 2020 | 6 | 7 |
| 2021 | 5 | 6 |
| 2022 | 7 | 10 |
| 2023 | 1 | 2 |
| 2024 | 6 | 4 |
| 2025 | 3 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use28 Jul 2026US 12,692,285 B2Upm-Kymmene Corporation
- Method and apparatus for treating mixtures of liquids and solids19 May 2026US 12,630,976 B2Lean Pulp Oy
- Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water18 Mar 2025US 12,251,653 B2
- Disc filters and methods of operating disc filters11 Mar 2025US 12,246,275 B2Kadant Black Clawson LLC
- Device and method for separating substances of different flowability that are mixed together25 Feb 2025US 12,233,618 B2Nordischer Maschinenbau Rud. Baader GmbH + Co. KG
- Powdered adsorbent lossless recovery method based on belt filter10 Sep 2026US 2026/0263973 A1Zhejiang Yongzheng Lithium Technology Co., Ltd.
- Filtering apparatus, filtering method, and water treatment system10 Jul 2025US 2025/0222378 A1National University Corporation Tokai National Higher Education and Research System
- Uniform spray-coating, cumulatively-stacking and squeezing solid-liquid separation system26 Jun 2025US 2025/0205619 A1Beijing Jinyu Mangrove Environmental Protection Technology Co., Ltd.
- A microparticle filter, a textile treatment apparatus, use thereof and a method of filtering microparticles1 May 2025US 2025/0135379 A1Xeros Limited
- Method for purifying adipose tissue and associated purified adipose tissue6 Feb 2025US 2025/0041773 A1
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
- Apparatus and method for separation of solids from liquid82US 5,814,230 A1998
- Rotary drum filter with reciprocating nozzle means70US 5,470,472 ADorr-Oliver Incorporated · 1995
- Method and apparatus for displacing liquor from a slurry of particulate solid material60US 5,643,468 AImperial Chemical Industries PLC · 1997