B01D 2201/0407
Perforated supports on both sides of the filtering element
B01D2201/0407 (Perforated supports on both sides of the filtering element) appears on 183 US grants and 117 published applications in this corpus.
Search patents in B01D- Granted patents
- 183
- Published applications
- 117
- Assignees
- 81
- Inventors
- 310
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 14 | 0 |
| 2000 | 10 | 0 |
| 2001 | 6 | 4 |
| 2002 | 4 | 12 |
| 2003 | 8 | 4 |
| 2004 | 2 | 6 |
| 2005 | 5 | 1 |
| 2006 | 3 | 8 |
| 2007 | 0 | 3 |
| 2008 | 5 | 4 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 3 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 8 |
| 2014 | 0 | 5 |
| 2015 | 2 | 0 |
| 2016 | 3 | 2 |
| 2017 | 3 | 1 |
| 2018 | 1 | 5 |
| 2019 | 5 | 6 |
| 2020 | 22 | 23 |
| 2021 | 10 | 10 |
| 2022 | 1 | 2 |
| 2023 | 4 | 4 |
| 2024 | 0 | 0 |
| 2025 | 3 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter container, filter assembly, and extraction device9 Dec 2025US 12,490,855 B2Wistron Corporation
- Filter container, filter assembly, and extraction device11 Nov 2025US 12,465,168 B2Wistron Corporation
- Candle filter support and plate assembly for polymer melts4 Mar 2025US 12,239,925 B2Westlake Longview Corporation
- Instruments, modules, and methods for improved detection of edited sequences in live cells29 Aug 2023US 11,739,290 B2Inscripta, Inc.
- Candle filter support and plate assembly for polymer melts4 Jul 2023US 11,691,094 B2Westlake Longview Corporation
- Filter element for use in a filter system15 Jan 2026US 2026/0014497 A1John Crane Inc.
- Filter device and separating apparatus30 Nov 2023US 2023/0381691 A1FAUDI Aviation GmbH
- Candle Filter Support and Plate Assembly for Polymer Melts14 Sep 2023US 2023/0285878 A1Westlake Longview Corporation
- Filter container, filter assembly, and extraction device8 Jun 2023US 2023/0172390 A1Wistron Corporation
- Multi-cartridge air filtration unit2 Feb 2023US 2023/0034206 A1
Most cited
By later US patents
- Filter material construction and method335US 5,672,399 ADonaldson Company, Inc. · 1997
- Replacement filter cartridge assembly253US 5,211,846 APleatco Electronic & Filter Corp. · 1993
- Corrugated filter element with external spiral tape support218US 4,402,830 APall Corporation · 1983
- Filter material construction and method190US 6,171,684 B2Donaldson Company, Inc. · 2001
- Filter cartridge with a connector seal179US 4,609,465 APall Corporation · 1986