B01D 29/68
With backwash arms, shoes or nozzles
Official title: with backwash arms, shoes or nozzles
B01D29/68 (With backwash arms, shoes or nozzles) appears on 398 US grants and 280 published applications in this corpus.
Search patents in B01D- Granted patents
- 398
- Published applications
- 280
- Assignees
- 224
- Inventors
- 687
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 12 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 13 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 12 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 5 |
| 2002 | 15 | 2 |
| 2003 | 8 | 13 |
| 2004 | 7 | 9 |
| 2005 | 7 | 9 |
| 2006 | 4 | 2 |
| 2007 | 5 | 4 |
| 2008 | 1 | 6 |
| 2009 | 1 | 9 |
| 2010 | 3 | 11 |
| 2011 | 7 | 9 |
| 2012 | 4 | 7 |
| 2013 | 7 | 26 |
| 2014 | 10 | 21 |
| 2015 | 14 | 15 |
| 2016 | 11 | 17 |
| 2017 | 12 | 14 |
| 2018 | 17 | 7 |
| 2019 | 15 | 15 |
| 2020 | 17 | 11 |
| 2021 | 12 | 15 |
| 2022 | 7 | 13 |
| 2023 | 6 | 8 |
| 2024 | 19 | 15 |
| 2025 | 6 | 10 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 29/682With a rotary movement with respect to the filtering element183
- B01D 29/688With backwash arms or shoes acting on the cake side110
- B01D 29/684With a translatory movement with respect to the filtering element109
- B01D 29/686With a combination of movements with respect to the filtering elements13
Recent patents
- Candle filter device6 Oct 2026US 12,752,222 B2Lenzing Aktiengesellschaft
- Filtration system self cleaning mechanism15 Sep 2026US 12,735,331 B2Amiad Water Systems Ltd.
- Plant and method for recycling and filtering rolling oil1 Sep 2026US 12,722,104 B2Fives Dms
- Filter assembly and foreign substance discharge device including same10 Mar 2026US 12,569,786 B2
- Apparatus and method for cleaning metal filter30 Sep 2025US 12,427,461 B2LG Chem.Ltd.
- Filter device for removing particles from a liquid24 Sep 2026US 2026/0284560 A1Mst Nl B.V.
- Washing machine effluent filtration with an agitator rotating around a filter element3 Sep 2026US 2026/0257157 A1MANN+HUMMEL Life Sciences & Environment Holding Singapore Pte. Ltd.
- A multi-process filtering and drying apparatus18 Jun 2026US 2026/0166453 A1Gmm Pfaudler Limited
- Air purifying filter cleaning apparatus and operating method thereof21 May 2026US 2026/0138063 A1Jk Global Co., Ltd.
- Backwashing device for fibrous filtration apparatus and fibrous filtration apparatus including the same14 May 2026US 2026/0131265 A1GRENEX Limited
Most cited
By later US patents