B01D 2201/31
Details relating to filtering apparatus: other construction details
Official title: Other construction details
B01D2201/31 (Details relating to filtering apparatus: other construction details) appears on 240 US grants and 261 published applications in this corpus.
Search patents in B01D- Granted patents
- 240
- Published applications
- 261
- Assignees
- 116
- Inventors
- 494
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 4 |
| 2005 | 4 | 2 |
| 2006 | 3 | 3 |
| 2007 | 1 | 4 |
| 2008 | 3 | 9 |
| 2009 | 4 | 20 |
| 2010 | 7 | 10 |
| 2011 | 6 | 8 |
| 2012 | 8 | 10 |
| 2013 | 8 | 11 |
| 2014 | 7 | 12 |
| 2015 | 11 | 6 |
| 2016 | 10 | 9 |
| 2017 | 8 | 11 |
| 2018 | 10 | 10 |
| 2019 | 9 | 19 |
| 2020 | 14 | 25 |
| 2021 | 12 | 18 |
| 2022 | 22 | 12 |
| 2023 | 15 | 16 |
| 2024 | 13 | 14 |
| 2025 | 16 | 15 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Recovery tank22 Sep 2026US 12,740,683 B2SharkNinja Operating LLC
- Flat filter media22 Sep 2026US 12,741,238 B2Bullfrog International, LC
- Fluid filter retention mechanism18 Aug 2026US 12,708,869 B2Caterpillar Inc.
- Grid cover for filter system21 Jul 2026US 12,685,952 B2Walk Industrial, Inc.
- Liquid filter and filter element14 Jul 2026US 12,678,721 B2Mann+Hummel GmbH
- Animal watering system8 Oct 2026US 2026/0305570 A1Aborder Products, Inc.
- Permeate carrier with circular double knit fabric27 Aug 2026US 2026/0249217 A1Lear Corporation
- Separation system, vacuum arrangement, and use of a separation stage13 Aug 2026US 2026/0233132 A1Von Ardenne Asset GmbH & Co. KG
- Containment system and method for carbon capture device11 Jun 2026US 2026/0158433 A1Equinor Low Carbon UK Limited
- Variable crimped expanded metal filters, bi-directionally expanded metal filters, combinations thereof and expanding methods for manufacturing expanded sheet metal7 May 2026US 2026/0124560 A1ACS Industries, Inc.
Most cited
By later US patents
- Wire mesh filter123US 5,849,188 ABaker Hughes Incorporated · 1998
- Dust collector107US 4,218,227 ADonaldson Company, Inc. · 1980
- Filter for internal combustion engine fuels93US 6,709,588 B2Filterwerk Mann & Hummel GmbH · 2004
- Well casing assembly with erosion protection for inner screen89US 5,881,809 AUnited States Filter Corporation · 1999
- Self closing filter centerpost75US 5,846,417 AFleetguard, Inc. · 1998