B01D 29/88
Filters with filtering elements stationary during filtration: having feed or discharge devices
Official title: having feed or discharge devices
B01D29/88 (Filters with filtering elements stationary during filtration: having feed or discharge devices) appears on 1,469 US grants and 946 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,469
- Published applications
- 946
- Assignees
- 840
- Inventors
- 2,652
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 19 | 0 |
| 1978 | 12 | 0 |
| 1979 | 12 | 0 |
| 1980 | 14 | 0 |
| 1981 | 25 | 0 |
| 1982 | 13 | 0 |
| 1983 | 17 | 0 |
| 1984 | 29 | 0 |
| 1985 | 37 | 0 |
| 1986 | 26 | 0 |
| 1987 | 24 | 0 |
| 1988 | 31 | 0 |
| 1989 | 43 | 0 |
| 1990 | 54 | 0 |
| 1991 | 35 | 0 |
| 1992 | 42 | 0 |
| 1993 | 33 | 0 |
| 1994 | 28 | 0 |
| 1995 | 38 | 0 |
| 1996 | 48 | 0 |
| 1997 | 42 | 0 |
| 1998 | 30 | 0 |
| 1999 | 31 | 0 |
| 2000 | 41 | 0 |
| 2001 | 36 | 14 |
| 2002 | 35 | 31 |
| 2003 | 34 | 44 |
| 2004 | 34 | 37 |
| 2005 | 27 | 30 |
| 2006 | 24 | 18 |
| 2007 | 12 | 20 |
| 2008 | 12 | 18 |
| 2009 | 8 | 25 |
| 2010 | 20 | 16 |
| 2011 | 14 | 24 |
| 2012 | 19 | 40 |
| 2013 | 21 | 30 |
| 2014 | 15 | 29 |
| 2015 | 27 | 45 |
| 2016 | 27 | 30 |
| 2017 | 30 | 39 |
| 2018 | 33 | 49 |
| 2019 | 42 | 50 |
| 2020 | 40 | 55 |
| 2021 | 43 | 60 |
| 2022 | 45 | 54 |
| 2023 | 39 | 55 |
| 2024 | 32 | 42 |
| 2025 | 34 | 47 |
| 2026 | 21 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pool skimmer6 Oct 2026US 12,753,619 B1Sichuan Cootway Technology Co., Ltd.
- Downhole filter29 Sep 2026US 12,746,488 B2Baker Hughes Oilfield Operations LLC
- Apparatus and method for processing substrate22 Sep 2026US 12,741,239 B2Semes Co., Ltd.
- Pool skimmer1 Sep 2026US 12,723,423 B1Sichuan Cootway Technology Co., Ltd.
- Cyclone separator and dishwasher4 Aug 2026US 12,697,628 B2Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd.
- Filtering device and reaction vessel and method for manufacturing aqueous slurry using the same8 Oct 2026US 2026/0306972 A1Umicore Battery Materials Finland Oy
- Filter device for removing particles from a fluid1 Oct 2026US 2026/0295603 A1Mst Nl B.V.
- Filter device for removing particles from a liquid24 Sep 2026US 2026/0284560 A1Mst Nl B.V.
- Fluid filtration system with single use filter and integrated integrity test device and method of using same17 Sep 2026US 2026/0273442 A1Cytiva US LLC
- System and method for separation of organics and liquids from waste material17 Sep 2026US 2026/0273598 A1Komar Industries, Inc.
Most cited
By later US patents
- Quick-change filter cartridge and head therefor175US 4,735,716 ACuno Corporated · 1988
- Personal water filter bottle system161US 6,569,329 B1Innova Pure Water Inc. · 2003
- Cross-flow filtration device with filtrate flow conduits and method of forming same150US 4,781,831 A1988
- Method and apparatus for testing the integrity of filter elements142US 5,417,101 APall Corporation · 1995
- Arterial blood filter with improved gas venting135US 4,411,783 AShiley Incorporated · 1983