B01D 29/11
Filters with filtering elements stationary during filtration: with bag, cage, hose, tube
Official title: with bag, cage, hose, tube, sleeve or like filtering elements
B01D29/11 (Filters with filtering elements stationary during filtration: with bag, cage, hose, tube) appears on 5,378 US grants and 4,358 published applications in this corpus.
Search patents in B01D- Granted patents
- 5,378
- Published applications
- 4,358
- Assignees
- 2,271
- Inventors
- 8,575
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 47 | 0 |
| 1977 | 68 | 0 |
| 1978 | 56 | 0 |
| 1979 | 41 | 0 |
| 1980 | 52 | 0 |
| 1981 | 80 | 0 |
| 1982 | 46 | 0 |
| 1983 | 40 | 0 |
| 1984 | 51 | 0 |
| 1985 | 69 | 0 |
| 1986 | 67 | 0 |
| 1987 | 76 | 0 |
| 1988 | 76 | 0 |
| 1989 | 97 | 0 |
| 1990 | 95 | 0 |
| 1991 | 101 | 0 |
| 1992 | 102 | 0 |
| 1993 | 112 | 0 |
| 1994 | 72 | 0 |
| 1995 | 106 | 0 |
| 1996 | 117 | 0 |
| 1997 | 138 | 0 |
| 1998 | 159 | 0 |
| 1999 | 141 | 0 |
| 2000 | 116 | 0 |
| 2001 | 142 | 42 |
| 2002 | 129 | 114 |
| 2003 | 116 | 161 |
| 2004 | 92 | 157 |
| 2005 | 108 | 130 |
| 2006 | 88 | 110 |
| 2007 | 69 | 115 |
| 2008 | 55 | 107 |
| 2009 | 43 | 112 |
| 2010 | 66 | 128 |
| 2011 | 76 | 137 |
| 2012 | 111 | 125 |
| 2013 | 96 | 166 |
| 2014 | 77 | 135 |
| 2015 | 99 | 162 |
| 2016 | 96 | 183 |
| 2017 | 111 | 178 |
| 2018 | 144 | 226 |
| 2019 | 184 | 255 |
| 2020 | 229 | 299 |
| 2021 | 186 | 289 |
| 2022 | 209 | 262 |
| 2023 | 218 | 212 |
| 2024 | 205 | 225 |
| 2025 | 191 | 194 |
| 2026 | 113 | 134 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 29/13Supported filter elements3,482
- B01D 29/114Arranged for inward flow filtration799
- B01D 29/31Self-supporting filtering elements793
- B01D 29/111Making filtering elements774
- B01D 29/117Arranged for outward flow filtration466
- B01D 29/112Ring shaped filters wherein both opposite axial sides are opened and the33
Recent patents
- Candle filter device6 Oct 2026US 12,752,222 B2Lenzing Aktiengesellschaft
- Pool skimmer6 Oct 2026US 12,753,619 B1Sichuan Cootway Technology Co., Ltd.
- Automatic swimming pool cleaners especially adept at climbing and cleaning pool stairs29 Sep 2026US 12,747,605 B2Zodiac Pool Systems LLC
- Filter cartridge and water purification system22 Sep 2026US 12,741,249 B2Foshan Micro Midea Filter Mfg. Co., Ltd.
- Septic tank effluent filters15 Sep 2026US 12,734,467 B2Orenco Systems, Inc.
- Animal watering system8 Oct 2026US 2026/0305570 A1Aborder Products, Inc.
- Filtering device and reaction vessel and method for manufacturing aqueous slurry using the same8 Oct 2026US 2026/0306972 A1Umicore Battery Materials Finland Oy
- Water filter priming pump8 Oct 2026US 2026/0306973 A1
- Filter assemblies and related filter elements8 Oct 2026US 2026/0306974 A1Donaldson Company, Inc.
- Magnetically-coupled filtration system1 Oct 2026US 2026/0295477 A1
Most cited
By later US patents
- Fluid filter system524US 8,272,516 B2Advanced Filtration Systems Inc. · 2012
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Environmentally friendly filter cartridge275US 5,685,985 ABaldwin Filters, Inc. · 1997
- Replacement filter cartridge assembly253US 5,211,846 APleatco Electronic & Filter Corp. · 1993
- Corrugated filter element with external spiral tape support218US 4,402,830 APall Corporation · 1983