B01D 24/165
The filtering material being supported by pervious surfaces
Official title: {the filtering material being supported by pervious surfaces}
B01D24/165 (The filtering material being supported by pervious surfaces) appears on 72 US grants and 36 published applications in this corpus.
Search patents in B01D- Granted patents
- 72
- Published applications
- 36
- Assignees
- 44
- Inventors
- 124
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 0 | 2 |
| 2014 | 1 | 3 |
| 2015 | 1 | 1 |
| 2016 | 0 | 4 |
| 2017 | 2 | 1 |
| 2018 | 5 | 1 |
| 2019 | 5 | 1 |
| 2020 | 3 | 6 |
| 2021 | 4 | 2 |
| 2022 | 3 | 4 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pure water systems25 Aug 2026US 12,715,790 B2Unger Marketing International, LLC
- Water purification housing and rainwater purification system using the same25 Jun 2024US 12,017,160 B2
- Liquid treatment device5 Dec 2023US 11,833,452 B2Canpro Water Treatment Inc.
- Media purification devices having intergral flow controllers27 Dec 2022US 11,535,530 B2Unger Marketing International, LLC
- Capture, disruption, and extraction apparatus and method22 Nov 2022US 11,504,709 B2
- Filtration apparatus30 Apr 2026US 2026/0115630 A1Nihon Genryo Co., Ltd.
- Filter element, sealing assembly and coffee machine18 May 2023US 2023/0150834 A1Tianjin Yunda Industry and Trade Co., Ltd.
- Water purification housing and rainwater purification system using the same8 Dec 2022US 2022/0387909 A1
- Filter element, sealing assembly and coffee machine20 Oct 2022US 2022/0332597 A1Tianjin Yunda Industry and Trade Co., Ltd.
- Nutrient Removal Filtration System and Method5 May 2022US 2022/0134258 A1Oldcastle Infrastructure, Inc.
Most cited
By later US patents
- Filtration unit45US 6,110,389 A2000
- Method for backwashing water processing systems32US 5,750,041 A1998
- Water repurification method of city water and its equipment31US 4,946,600 AGoldstar Co., Ltd. · 1990
- Method of filtration using convertible (semifluidized) beds28US 4,157,959 AKansas State University Research Foundation · 1979
- Liquid filter apparatus26US 4,093,548 AOil Refining Systems of Florida, Inc. · 1978