B01D 29/00
Filters with filtering elements stationary during filtration
Official title: Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
B01D29/00 (Filters with filtering elements stationary during filtration) appears on 8,777 US grants and 7,343 published applications in this corpus.
Search patents in B01D- Granted patents
- 8,777
- Published applications
- 7,343
- Assignees
- 3,729
- Inventors
- 14,345
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 88 | 0 |
| 1977 | 92 | 0 |
| 1978 | 89 | 0 |
| 1979 | 74 | 0 |
| 1980 | 89 | 0 |
| 1981 | 128 | 0 |
| 1982 | 78 | 0 |
| 1983 | 81 | 0 |
| 1984 | 94 | 0 |
| 1985 | 100 | 0 |
| 1986 | 100 | 0 |
| 1987 | 130 | 0 |
| 1988 | 134 | 0 |
| 1989 | 172 | 0 |
| 1990 | 167 | 0 |
| 1991 | 164 | 0 |
| 1992 | 156 | 0 |
| 1993 | 161 | 0 |
| 1994 | 114 | 0 |
| 1995 | 157 | 0 |
| 1996 | 168 | 0 |
| 1997 | 197 | 0 |
| 1998 | 212 | 0 |
| 1999 | 200 | 0 |
| 2000 | 178 | 0 |
| 2001 | 209 | 64 |
| 2002 | 187 | 181 |
| 2003 | 176 | 235 |
| 2004 | 155 | 239 |
| 2005 | 158 | 196 |
| 2006 | 132 | 164 |
| 2007 | 97 | 184 |
| 2008 | 92 | 173 |
| 2009 | 66 | 165 |
| 2010 | 101 | 184 |
| 2011 | 129 | 199 |
| 2012 | 162 | 223 |
| 2013 | 135 | 299 |
| 2014 | 156 | 298 |
| 2015 | 189 | 370 |
| 2016 | 193 | 345 |
| 2017 | 237 | 337 |
| 2018 | 289 | 402 |
| 2019 | 342 | 427 |
| 2020 | 400 | 508 |
| 2021 | 343 | 463 |
| 2022 | 341 | 413 |
| 2023 | 350 | 357 |
| 2024 | 330 | 356 |
| 2025 | 291 | 322 |
| 2026 | 194 | 239 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 29/11Filters with filtering elements stationary during filtration: with bag, cage, hose, tube5,378
- B01D 29/50Filters with filtering elements stationary during filtration: with multiple filtering elements, characterised2,415
- B01D 29/01Filters with filtering elements stationary during filtration: with flat filtering elements2,074
- B01D 29/62Regenerating the filter material in the filter1,970
- B01D 29/88Filters with filtering elements stationary during filtration: having feed or discharge devices1,469
- B01D 29/96In which the filtering elements are moved between filtering operations1,168
- B01D 29/60Integrally combined with devices for controlling the filtration754
- B01D 29/44Edge filtering elements, i.e. using contiguous impervious surfaces700
All 15 subgroupsShow fewer
- B01D 29/76Handling the filter cake in the filter for purposes other than for566
- B01D 29/39Filters with filtering elements stationary during filtration: with hollow discs side by323
- B01D 29/09Filters with filtering elements stationary during filtration: with filtering bands200
- B01D 29/085Funnel filters119
- B01D 29/0093Making filtering elements not provided for elsewhere61
- B01D 29/0095Flat filtering elements54
- B01D 29/0097Curved filtering elements24
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Most cited
By later US patents
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- Replacement filter cartridge assembly253US 5,211,846 APleatco Electronic & Filter Corp. · 1993