B01D 29/01
Filters with filtering elements stationary during filtration: with flat filtering elements
Official title: with flat filtering elements (B01D29/39 takes precedence)
B01D29/01 (Filters with filtering elements stationary during filtration: with flat filtering elements) appears on 2,074 US grants and 1,560 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,074
- Published applications
- 1,560
- Assignees
- 1,180
- Inventors
- 3,834
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 17 | 0 |
| 1978 | 21 | 0 |
| 1979 | 17 | 0 |
| 1980 | 20 | 0 |
| 1981 | 28 | 0 |
| 1982 | 25 | 0 |
| 1983 | 23 | 0 |
| 1984 | 27 | 0 |
| 1985 | 20 | 0 |
| 1986 | 16 | 0 |
| 1987 | 27 | 0 |
| 1988 | 41 | 0 |
| 1989 | 49 | 0 |
| 1990 | 51 | 0 |
| 1991 | 49 | 0 |
| 1992 | 46 | 0 |
| 1993 | 44 | 0 |
| 1994 | 31 | 0 |
| 1995 | 41 | 0 |
| 1996 | 39 | 0 |
| 1997 | 58 | 0 |
| 1998 | 58 | 0 |
| 1999 | 58 | 0 |
| 2000 | 60 | 0 |
| 2001 | 51 | 20 |
| 2002 | 49 | 55 |
| 2003 | 46 | 57 |
| 2004 | 43 | 60 |
| 2005 | 41 | 54 |
| 2006 | 34 | 32 |
| 2007 | 19 | 29 |
| 2008 | 24 | 41 |
| 2009 | 16 | 25 |
| 2010 | 22 | 32 |
| 2011 | 32 | 31 |
| 2012 | 27 | 40 |
| 2013 | 25 | 49 |
| 2014 | 36 | 53 |
| 2015 | 31 | 69 |
| 2016 | 31 | 64 |
| 2017 | 43 | 64 |
| 2018 | 59 | 87 |
| 2019 | 64 | 98 |
| 2020 | 92 | 126 |
| 2021 | 80 | 106 |
| 2022 | 69 | 89 |
| 2023 | 82 | 80 |
| 2024 | 77 | 74 |
| 2025 | 57 | 76 |
| 2026 | 41 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 29/05Supported937
- B01D 29/03Self-supporting436
- B01D 29/012Making filtering elements409
- B01D 29/016With corrugated, folded or wound filtering elements89
- B01D 29/014With curved filtering elements64
- B01D 29/018Ring shaped43
- B01D 29/075Located in a closed housing and comprising scrapers or agitators on the27
Recent patents
- Control center box and flexible bathtub6 Oct 2026US 12,751,582 B2Jiaxing Virpol Sanitary Ware co., LTD.
- Downhole filter29 Sep 2026US 12,746,488 B2Baker Hughes Oilfield Operations LLC
- Recovery tank22 Sep 2026US 12,740,683 B2SharkNinja Operating LLC
- Flat filter media22 Sep 2026US 12,741,238 B2Bullfrog International, LC
- Sludge retaining device for a drain of a sanitary basin22 Sep 2026US 12,742,320 B2BLANCO GmbH + Co KG
- Collapsible Funnel with Integrated Mesh Screen for Capturing Kidney Stones from Urine Flow8 Oct 2026US 2026/0306078 A1
- Gas filter element, filter device and method of use1 Oct 2026US 2026/0295476 A1Pall Corporation
- Assemblies and methods for material extraction from retention collections24 Sep 2026US 2026/0285620 A1Industrial Vacuum Transfer Services USA, LLC
- Method for manufacturing filter unit17 Sep 2026US 2026/0273440 A1Seiko Epson Corporation
- Trash intercepting and sediment barrier device17 Sep 2026US 2026/0275669 A1China Three Gorges University
Most cited
By later US patents
- Disposable vacuum filtration apparatus capable of detecting microorganisms and particulates in liquid samples489US 6,913,152 B22005
- Quick-change filter cartridge and head therefor175US 4,735,716 ACuno Corporated · 1988
- Process for making hermetically sealed filter units and filters made thereby163US 4,113,627 AFiltertek Inc. · 1978
- Cross-flow filtration device with filtrate flow conduits and method of forming same150US 4,781,831 A1988
- Fluid filter element and support148US 4,498,989 ANippondenso Co., Ltd. · 1985