B01D 24/38
Feed or discharge devices
B01D24/38 (Feed or discharge devices) appears on 267 US grants and 179 published applications in this corpus.
Search patents in B01D- Granted patents
- 267
- Published applications
- 179
- Assignees
- 192
- Inventors
- 469
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 11 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 2 |
| 2002 | 5 | 4 |
| 2003 | 6 | 6 |
| 2004 | 2 | 6 |
| 2005 | 4 | 5 |
| 2006 | 5 | 4 |
| 2007 | 5 | 1 |
| 2008 | 3 | 4 |
| 2009 | 1 | 5 |
| 2010 | 2 | 1 |
| 2011 | 1 | 6 |
| 2012 | 2 | 2 |
| 2013 | 1 | 5 |
| 2014 | 3 | 8 |
| 2015 | 8 | 7 |
| 2016 | 9 | 13 |
| 2017 | 8 | 9 |
| 2018 | 9 | 11 |
| 2019 | 5 | 7 |
| 2020 | 13 | 17 |
| 2021 | 12 | 9 |
| 2022 | 13 | 17 |
| 2023 | 8 | 7 |
| 2024 | 6 | 4 |
| 2025 | 14 | 16 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- Regenerative media filter with flow diffuser14 Jul 2026US 12,678,716 B2Evoqua Water Technologies LLC
- Systems and methods for stormwater management9 Dec 2025US 12,492,130 B2Advanced Drainage Systems, Inc.
- Solid-liquid filtration assembly and method of use25 Nov 2025US 12,478,900 B2
- Water tank with tank outlet valve and water filter cartridge with two water filter cartridge outlets which are arranged concentrically to one another30 Sep 2025US 12,427,450 B2AQUIS WASSER-LUFT-SYSTEME GMBH, Lindau
- In-Pipe Stormwater Treatment Unit Best Management Practice (I-STUB)21 May 2026US 2026/0138056 A1The United States of America as represented by the Secretary of the Navy
- Filtration system14 May 2026US 2026/0131263 A2The Pennington School
- Media vessel for liquid treatment5 Mar 2026US 2026/0061344 A1Yardney Water Management Systems Inc.
- Filtration system11 Dec 2025US 2025/0375720 A1The Pennington School, Women in STEM Solving Problems ("WISSP")
- Enclosed media fluid filtration device13 Nov 2025US 2025/0345726 A1Advanced Drainage Systems, Inc.
Most cited
By later US patents
- Quick-change filter cartridge and head therefor175US 4,735,716 ACuno Corporated · 1988
- Quick-change filter cartridge and head therefor130US 4,877,521 ACuno Incorporated · 1989
- Method and apparatus for treating storm water107US 5,322,629 AW & H Pacific Inc. · 1994
- Computer controlled method of operating a swimming pool filtration system85US 5,804,080 A1998
- Apparatus for operating a filter arrangement78US 5,628,896 AKlingenberger GmbH · 1997