B01D 24/08
The filtering material being supported by at least two pervious coaxial walls
Official title: the filtering material being supported by at least two pervious coaxial walls
B01D24/08 (The filtering material being supported by at least two pervious coaxial walls) appears on 82 US grants and 53 published applications in this corpus.
Search patents in B01D- Granted patents
- 82
- Published applications
- 53
- Assignees
- 44
- Inventors
- 150
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 4 |
| 2003 | 3 | 6 |
| 2004 | 1 | 2 |
| 2005 | 4 | 4 |
| 2006 | 1 | 2 |
| 2007 | 3 | 2 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 3 |
| 2012 | 0 | 0 |
| 2013 | 2 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 4 |
| 2018 | 1 | 2 |
| 2019 | 2 | 2 |
| 2020 | 2 | 5 |
| 2021 | 4 | 4 |
| 2022 | 4 | 2 |
| 2023 | 2 | 2 |
| 2024 | 0 | 2 |
| 2025 | 3 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Regenerative media filter with flow diffuser14 Jul 2026US 12,678,716 B2Evoqua Water Technologies LLC
- Vacuum assisted filtration30 Sep 2025US 12,427,451 B2Tokyo Electron Limited
- Enclosed media fluid filtration device27 May 2025US 12,311,290 B2Advanced Drainage Systems, Inc.
- Quick change oil filter20 May 2025US 12,303,813 B2Deere & Company
- Household wastewater filter30 May 2023US 11,660,551 B2Wex Companies, Inc.
- Enclosed media fluid filtration device13 Nov 2025US 2025/0345726 A1Advanced Drainage Systems, Inc.
- Quick Change Oil Filter24 Jul 2025US 2025/0235804 A1Deere & Company
- Filter Apparatus1 Aug 2024US 2024/0252962 A1Hydac Process Technology GmbH
- Vacuum assisted filtration9 May 2024US 2024/0149193 A1Tokyo Electron Limited
- Regenerative media filter with flow diffuser31 Aug 2023US 2023/0271113 A1Evoqua Water Technologies LLC
Most cited
By later US patents
- Low profile dual screen prepack93US 5,004,049 AOtis Engineering Corporation · 1991
- Filter element83US 5,169,528 ASeitz-Filter-Werke GmbH & Co. · 1992
- Filter element with regenerable bulk material filling and method for making same82US 5,290,457 ASeitz-Filter-Werke GmbH & Co. · 1994
- Cartridge filter75US 4,350,592 A1982
- Filtering media for controlling the flow of sand during oil well operations75US 4,821,800 ASherritt Gordon Mines Limited · 1989