B01D 29/665
By using pistons
Official title: {by using pistons}
B01D29/665 (By using pistons) appears on 42 US grants and 21 published applications in this corpus.
Search patents in B01D- Granted patents
- 42
- Published applications
- 21
- Assignees
- 28
- Inventors
- 70
- Latest grant
- 1 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 2 |
| 2016 | 3 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Bernoulli filter device and method of cleaning a bernoulli filter device28 Aug 2025US 2025/0269306 A1Georg Schunemann GmbH
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- Reciprocating Pressure Backwash Anti-blocking Filter7 Nov 2019US 2019/0336892 A1
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Most cited
By later US patents
- Self-regenerating pressurized filtering system for liquids56US 5,389,243 A1995
- Fluid filter with pleated septum38US 5,591,329 AH-Tech, Inc. · 1997
- Water filter with strainer scraping means34US 5,804,072 A1998
- Fluid filter with pleated septum33US 5,871,641 AH-Tech, Inc. · 1999
- Filters cleanable by reverse flushing30US 4,632,757 A1986