B01D 29/668
With valves
Official title: {with valves, e.g. rotating valves for coaxially placed filtering elements}
B01D29/668 (With valves) appears on 259 US grants and 190 published applications in this corpus.
Search patents in B01D- Granted patents
- 259
- Published applications
- 190
- Assignees
- 156
- Inventors
- 463
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 11 | 0 |
| 2002 | 5 | 12 |
| 2003 | 13 | 6 |
| 2004 | 7 | 11 |
| 2005 | 5 | 8 |
| 2006 | 8 | 4 |
| 2007 | 2 | 4 |
| 2008 | 2 | 8 |
| 2009 | 2 | 7 |
| 2010 | 3 | 5 |
| 2011 | 3 | 3 |
| 2012 | 7 | 8 |
| 2013 | 4 | 7 |
| 2014 | 4 | 15 |
| 2015 | 5 | 6 |
| 2016 | 5 | 9 |
| 2017 | 6 | 9 |
| 2018 | 9 | 6 |
| 2019 | 3 | 9 |
| 2020 | 8 | 8 |
| 2021 | 9 | 7 |
| 2022 | 7 | 9 |
| 2023 | 4 | 9 |
| 2024 | 8 | 6 |
| 2025 | 7 | 10 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for processing substrate22 Sep 2026US 12,741,239 B2Semes Co., Ltd.
- Filter device for removing particles from a fluid28 Jul 2026US 12,691,458 B2Mst Nl B.V.
- Slurry filter assembly9 Jun 2026US 12,649,117 B2Precision Planting LLC
- Automatic flushing system for filters associated with an irrigation system10 Mar 2026US 12,569,785 B2
- Multiplexed pneumatic control air system for slurry filtration3 Mar 2026US 12,564,802 B2Precision Planting LLC
- Filter device for removing particles from a fluid1 Oct 2026US 2026/0295603 A1Mst Nl B.V.
- Automatic flushing system for filters associated with an irrigation system25 Jun 2026US 2026/0175150 A1
- Dual variable displacement pump fuel system with washed actuation flow and wash velocity control valve19 Mar 2026US 2026/0078703 A1Hamilton Sundstrand Corporation
- System including a reuseable oil filter26 Feb 2026US 2026/0054202 A1Rpm Industries, LLC
- Post filter set configuration for a water treatment operation and maintenance methods27 Nov 2025US 2025/0360442 A1ATEC Water Systems, LLC
Most cited
By later US patents
- Apparatus and method for treating storm water runoff129US 5,707,527 AStormwater Treatment LLC · 1998
- Filter apparatus for continuously thickening suspensions91US 4,511,471 ADrM, Dr. Muller AG · 1985
- Supercritical water oxidation process of organics with inorganics82US 5,252,224 AModell Development Corporation · 1993
- Filtering apparatus72US 6,596,165 B2Parker-Hannifin Corporation · 2003
- Self-cleaning siphon-actuated radial flow filter basket64US 6,027,639 AStormwater Treatment LLC · 2000