B01D 29/44
Edge filtering elements, i.e. using contiguous impervious surfaces
B01D29/44 (Edge filtering elements, i.e. using contiguous impervious surfaces) appears on 700 US grants and 389 published applications in this corpus.
Search patents in B01D- Granted patents
- 700
- Published applications
- 389
- Assignees
- 380
- Inventors
- 1,038
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 13 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 23 | 0 |
| 1982 | 11 | 0 |
| 1983 | 17 | 0 |
| 1984 | 15 | 0 |
| 1985 | 7 | 0 |
| 1986 | 10 | 0 |
| 1987 | 25 | 0 |
| 1988 | 17 | 0 |
| 1989 | 26 | 0 |
| 1990 | 17 | 0 |
| 1991 | 26 | 0 |
| 1992 | 16 | 0 |
| 1993 | 13 | 0 |
| 1994 | 8 | 0 |
| 1995 | 17 | 0 |
| 1996 | 18 | 0 |
| 1997 | 7 | 0 |
| 1998 | 23 | 0 |
| 1999 | 13 | 0 |
| 2000 | 20 | 0 |
| 2001 | 26 | 6 |
| 2002 | 25 | 22 |
| 2003 | 18 | 26 |
| 2004 | 17 | 22 |
| 2005 | 11 | 11 |
| 2006 | 11 | 9 |
| 2007 | 11 | 21 |
| 2008 | 4 | 14 |
| 2009 | 5 | 18 |
| 2010 | 8 | 13 |
| 2011 | 19 | 17 |
| 2012 | 16 | 20 |
| 2013 | 7 | 19 |
| 2014 | 8 | 11 |
| 2015 | 10 | 12 |
| 2016 | 12 | 14 |
| 2017 | 10 | 13 |
| 2018 | 13 | 14 |
| 2019 | 12 | 12 |
| 2020 | 11 | 21 |
| 2021 | 18 | 21 |
| 2022 | 8 | 18 |
| 2023 | 14 | 10 |
| 2024 | 10 | 8 |
| 2025 | 7 | 13 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Suction device for drilling mud2 Jun 2026US 12,644,349 B2Geolog S.r.l.
- Water purification system and method12 May 2026US 12,623,167 B2
- Microplastic detection sensor and microplastic detection system using the same12 May 2026US 12,625,049 B2Korea Electronics Technology Institute
- Separator assemblies and methods28 Apr 2026US 12,611,621 B2Battelle Memorial Institute
- Screening device for use in coarse matter screening wells of a waste water treatment plant24 Mar 2026US 12,583,762 B2Deyma La Mancha, S.L.
- Filter device for removing particles from a liquid24 Sep 2026US 2026/0284560 A1Mst Nl B.V.
- Screening Device, Screening Element and Method for Producing a Screening Device27 Aug 2026US 2026/0249215 A1Huber SE
- Wastewater screen filter and vibration monitor19 Mar 2026US 2026/0078018 A1Headworks International, Inc.
- Filter assembly and foreign substance discharge device including same5 Mar 2026US 2026/0061349 A1
- Channel chip18 Dec 2025US 2025/0381572 A1SCREEN Holdings Co., Ltd.
Most cited
By later US patents
- Filtering and dispensing system with independently activated pumps in series161US 5,167,837 AFAS-Technologies, Inc. · 1992
- Fluid dispensing system124US 5,516,429 AFAStar, Ltd. · 1996
- Mining screen device and grid structure therefor102US 5,385,669 AEnvironmental Procedures, Inc. · 1995
- Labyrinth disk stack having disks with integral filter screens98US 4,267,045 AThe Babcock & Wilcox Company · 1981
- Fluid filter92US 6,440,303 B2Chapin Manufacturing, Inc. · 2002