B01D 25/172
Plate spreading means
Official title: Plate spreading means (removal of filter cakes B01D25/32)
B01D25/172 (Plate spreading means) appears on 98 US grants and 18 published applications in this corpus.
Search patents in B01D- Granted patents
- 98
- Published applications
- 18
- Assignees
- 50
- Inventors
- 137
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 2 |
| 2025 | 0 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circular plate pulling filter press21 Apr 2026US 12,605,655 B2Jingjin Equipment Inc.
- Filter press with multi-function robot for maintenance, tracking and wear control of filtering septa31 Mar 2026US 12,589,337 B2Diemme Filtration S.R.L.
- Electromagnetic-force-based dewatering for sewage sludge reduction23 Feb 2021US 10,927,027 B2China Jiliang University
- Filter moving device16 Feb 2021US 10,919,715 B2Lonza Ltd.
- Electromagnetic-force-based dewatering for sewage sludge reduction3 Dec 2019US 10,494,285 B2China Jiliang University
- Filter apparatus and filtering method15 May 2025US 2025/0153076 A1
- Plate detection apparatus for filter presses27 Mar 2025US 2025/0099881 A1
- Machine system with filter press and removal device28 Nov 2024US 2024/0390824 A1Strassburger Filter GmbH & Co. KG
- Filter press with multi-function robot for maintenance, tracking and wear control of filtering septa7 Mar 2024US 2024/0075412 A1Aqseptence Group, Inc.
- Circular plate pulling filter press20 Apr 2023US 2023/0120372 A1Jingjin Equipment Inc.
Most cited
By later US patents
- Spraying apparatus for cleaning filter press plates24US 4,076,033 APassavant-Werke Michelbacher Hutte · 1978
- Filter press20US 4,108,777 AKurita Machinery Manufacturing Company Limited · 1978
- Movable apparatus for removal of filter plates from a filter press20US 4,172,792 A1979
- Washing apparatus for filter press16US 4,129,137 AKurita Machinery Manufacturing Company Limited · 1978
- Filter press14US 4,032,450 AIshigaki Kiko Co., Ltd. · 1977