B01D 24/263
The filtering material being supported by pervious surfaces
Official title: {the filtering material being supported by pervious surfaces}
B01D24/263 (The filtering material being supported by pervious surfaces) appears on 23 US grants and 4 published applications in this corpus.
Search patents in B01D- Granted patents
- 23
- Published applications
- 4
- Assignees
- 15
- Inventors
- 32
- Latest grant
- 3 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 3 | 0 |
| 2020 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Water filtration device and method for re-circulating filtered water in decorative waterways3 Nov 2020US 10,822,248 B1
- Method and apparatus for filtering contaminated water9 Jun 2020US 10,675,565 B1
- Apparatus and method for removing impurities from water or wastewater5 Nov 2019US 10,463,995 B2Roberts Marketing DE, Inc.
- Floating filter media filtration system with backwash10 Sep 2019US 10,407,317 B2Metawater Co., Ltd.
- Restrictive up flow media filter with servicing system20 Aug 2019US 10,384,956 B1Oldcastle Infrastructure, Inc.
- Apparatus and Method for Removing Impurities from Water or Wastewater5 Apr 2018US 2018/0093231 A1Roberts Marketing DE, Inc.
- Filtration system14 Nov 2013US 2013/0299409 A1Metawater Co., Ltd.
- Rain water treating device in combined sewage, backwashing method therefor12 Jun 2003US 2003/0106859 A1NGK Insulators, Ltd.
- Filtering system for runoff water29 Aug 2002US 2002/0117435 A1
Most cited
By later US patents
- Method and apparatus for separating suspended solids from liquids47US 4,743,382 AState of Oregon acting by and through the State Board of Higher Education on behalf of Oregon State University · 1988
- Ornamental pond skimmer and filter apparatus45US 6,461,501 B1Hardscape Materials, Inc. · 2002
- Filtering system for runoff water28US 6,869,528 B22005
- Filtration device and method24US 4,582,609 AMinnesota Mining and Manufacturing Company · 1986
- Method of washing an upflow filter and filter bed employed in said filter23US 5,080,808 ARoberts Filter Manufacturing Company · 1992