B01D 25/30
Feeding devices
Official title: Feeding devices {; Discharge devices}
B01D25/30 (Feeding devices) appears on 83 US grants and 53 published applications in this corpus.
Search patents in B01D- Granted patents
- 83
- Published applications
- 53
- Assignees
- 43
- Inventors
- 138
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 6 |
| 2011 | 1 | 0 |
| 2012 | 3 | 2 |
| 2013 | 5 | 1 |
| 2014 | 1 | 4 |
| 2015 | 1 | 4 |
| 2016 | 0 | 1 |
| 2017 | 3 | 4 |
| 2018 | 3 | 3 |
| 2019 | 2 | 3 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 6 |
| 2024 | 3 | 2 |
| 2025 | 3 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter plate assembly for a horizontal plate and frame-type filter, such as a tower press, a filter plate and a vat liner12 May 2026US 12,623,165 B2Metso Finland Oy
- Grid and a vat for a filtrate vat assembly of a vertical filter press28 Apr 2026US 12,611,620 B2Metso Finland Oy
- Outlet piece assembly for a horizontal plate and frame-type filter, such as a tower press16 Dec 2025US 12,496,538 B2Metso Finland Oy
- Lithium extraction enhanced by an alternate phase29 Jul 2025US 12,370,468 B2Lilac Solutions, Inc.
- Lithium extraction enhanced by an alternate phase25 Mar 2025US 12,257,529 B2Lilac Solutions, Inc.
- A filter plate assembly for a horizontal plate and frame-type filter, such as a tower press, a filter plate and a vat liner20 Aug 2026US 2026/0241310 A1Metso Finland Oy
- Filtrate collection unit for filter plate in filter presses25 Jun 2026US 2026/0175145 A1Thejo Engineering Limited
- Uniform spray-coating, cumulatively-stacking and squeezing solid-liquid separation system26 Jun 2025US 2025/0205619 A1Beijing Jinyu Mangrove Environmental Protection Technology Co., Ltd.
- Devices for efficient sorbent utilization in lithium extraction24 Apr 2025US 2025/0128186 A1Lilac Solutions, Inc.
- Filtrate vat assembly for a filter press1 Feb 2024US 2024/0033661 A1Metso Outotec Finland Oy
Most cited
By later US patents
- Inline filter apparatus526US 5,820,646 ADonaldson Company, Inc. · 1998
- Slanted inline filter319US 5,772,883 ADonaldson Company, Inc. · 1998
- Method of making a fluted filter media for air filter112US 7,329,326 B2Donaldson Company, Inc. · 2008
- Process and materials for coiling z-filter media, and/or closing flutes of filter media; and, products87US 8,226,786 B2Donaldson Company, Inc. · 2012
- Flow control sensor and method for filling of a filter press44US 6,132,176 AUnited States Filter Corporation · 2000