B01D 33/64
By compression
Official title: by compression
B01D33/64 (By compression) appears on 174 US grants and 48 published applications in this corpus.
Search patents in B01D- Granted patents
- 174
- Published applications
- 48
- Assignees
- 108
- Inventors
- 285
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 10 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 14 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 3 |
| 2002 | 4 | 2 |
| 2003 | 3 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 4 |
| 2011 | 3 | 5 |
| 2012 | 2 | 3 |
| 2013 | 5 | 1 |
| 2014 | 0 | 2 |
| 2015 | 2 | 7 |
| 2016 | 2 | 2 |
| 2017 | 1 | 0 |
| 2018 | 5 | 3 |
| 2019 | 4 | 0 |
| 2020 | 0 | 3 |
| 2021 | 0 | 1 |
| 2022 | 3 | 3 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
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
- Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water18 Mar 2025US 12,251,653 B2
- 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
- Rotary drum vacuum filter with a throttling valve14 May 2024US 11,980,837 B2Valmet Corporation
- Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use8 Mar 2022US 11,267,837 B2Upm-Kymmene Corporation
- Roller filtration apparatus5 Oct 2023US 2023/0311030 A1Danmarks Tekniske Universitet
- Multi-structure filtration device for filtering, separating, and dehydrating foreign substances in water27 Oct 2022US 2022/0339564 A1Essa Co., Ltd.
- Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use18 Aug 2022US 2022/0259246 A1Upm-Kymmene Corporation
- Device and method for separating substances of different flowability that are mixed together28 Jul 2022US 2022/0234320 A1Nordischer Maschinenbau Rud. Baader GmbH + Co. KG
- Vacuum filter19 Aug 2021US 2021/0252436 A1Valmet Corporation
Most cited
By later US patents
- Rotary drum type device for separating solid particles from a liquid59US 5,618,424 ANagaoka International Corporation · 1997
- Screw press38US 6,634,508 B1Ishigaki Company Limited · 2003
- Process and system for the dehydration of residues34US 4,142,971 ADegremont · 1979
- Method for dewatering sludge32US 4,101,400 AMachinefabriek W. Hubert & Co. B.V. · 1978
- Process of dewatering sludge-type material and installation for carrying out the process32US 4,192,743 AAlbert Klein KG · 1980