B01D 25/26
Cell-type stack filters
B01D25/26 (Cell-type stack filters) appears on 160 US grants and 107 published applications in this corpus.
Search patents in B01D- Granted patents
- 160
- Published applications
- 107
- Assignees
- 92
- Inventors
- 294
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 9 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 4 |
| 2003 | 3 | 7 |
| 2004 | 3 | 3 |
| 2005 | 3 | 12 |
| 2006 | 0 | 3 |
| 2007 | 4 | 4 |
| 2008 | 2 | 9 |
| 2009 | 1 | 2 |
| 2010 | 6 | 11 |
| 2011 | 4 | 7 |
| 2012 | 5 | 4 |
| 2013 | 6 | 2 |
| 2014 | 4 | 3 |
| 2015 | 4 | 4 |
| 2016 | 1 | 1 |
| 2017 | 3 | 3 |
| 2018 | 2 | 3 |
| 2019 | 2 | 4 |
| 2020 | 4 | 0 |
| 2021 | 2 | 5 |
| 2022 | 2 | 4 |
| 2023 | 2 | 3 |
| 2024 | 1 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter press adapter12 May 2026US 12,623,164 B2Takeda Pharmaceutical Company Limited
- Formed filter media10 Mar 2026US 12,569,797 B2Cummins Filtration Inc.
- Fluid filtration apparatuses, systems, and methods9 Sep 2025US 12,409,397 B2Donaldson Company, Inc.
- Filter disk segments11 Feb 2025US 12,220,657 B2Pall Corporation
- Pleated filtration media, media packs, filter elements, and methods for filtering fluids30 Jul 2024US 12,048,888 B2Donaldson Company, Inc.
- Tangential flow filter with combined permeate outputs and method of filtering23 Jul 2026US 2026/0208114 A1EMD Millipore Corporation
- Filter assemblies utilizing full cross-section21 May 2026US 2026/0138067 A1Atmus Filtration IP Inc.
- Sleeve for a filtering unit with backwashing30 Apr 2026US 2026/0115631 A1Alfa Laval Moatti
- Filter element and filter comprising at least two filter elements7 Aug 2025US 2025/0249382 A1Alfa Laval Moatti
- Uniform spray-coating, cumulatively-stacking and squeezing solid-liquid separation system26 Jun 2025US 2025/0205619 A1Beijing Jinyu Mangrove Environmental Protection Technology Co., Ltd.
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
- Fluid filtering device309US 4,589,983 ADonaldson Company, Inc. · 1986
- Fluid filtering device255US 4,410,427 ADonaldson Company, Inc. · 1983
- Filter element having a flat and non-flat configuration185US 5,562,825 ANippondenso Co., Ltd. · 1996