B01D 2201/313
Means for protecting the filter from the incoming fluid
Official title: Means for protecting the filter from the incoming fluid, e.g. shields
B01D2201/313 (Means for protecting the filter from the incoming fluid) appears on 61 US grants and 35 published applications in this corpus.
Search patents in B01D- Granted patents
- 61
- Published applications
- 35
- Assignees
- 46
- Inventors
- 97
- Latest grant
- 21 Jul 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 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 3 |
| 2012 | 0 | 1 |
| 2013 | 3 | 3 |
| 2014 | 0 | 0 |
| 2015 | 4 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 0 | 3 |
| 2020 | 1 | 5 |
| 2021 | 1 | 0 |
| 2022 | 2 | 0 |
| 2023 | 0 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grid cover for filter system21 Jul 2026US 12,685,952 B2Walk Industrial, Inc.
- Water filter14 Oct 2025US 12,440,786 B2Karofi R&D Company Limited
- Filter element and housing having non-circular cross-sections25 Jun 2024US 12,017,171 B2Cummins Filtration Sarl
- Grid cover for filter system6 Feb 2024US 11,890,563 B2
- Pipeline strainer20 Dec 2022US 11,529,574 B2Strahman Valves, Inc.
- Filter for hydraulic fluids for hydraulic circuits19 Mar 2026US 2026/0077281 A1Mp Filtri S.P.A.
- Debris removal from degasser probe19 Mar 2026US 2026/0078644 A1Schlumberger Technology Corporation
- Grid Cover for Filter System29 Aug 2024US 2024/0286068 A1Walk Industrial, Inc.
- Filter cartridge for swimming pools and spas21 Dec 2023US 2023/0407658 A1Fluidra Group Australia Pty Ltd.
- Water filter16 Feb 2023US 2023/0052030 A1Karofi R&D Company Limited
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
- Well casing assembly with erosion protection for inner screen89US 5,881,809 AUnited States Filter Corporation · 1999
- Filter apparatus with reverse flow cleaning60US 4,278,454 AWehr Corporation · 1981
- Backflushed air filters54US 4,661,131 A1987