B01D 29/072
Ring shaped
Official title: {ring shaped}
B01D29/072 (Ring shaped) appears on 43 US grants and 10 published applications in this corpus.
Search patents in B01D- Granted patents
- 43
- Published applications
- 10
- Assignees
- 15
- Inventors
- 65
- Latest grant
- 22 Nov 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 2 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Filter cartridge22 Nov 2011US 8,061,529 B2Filter Technology Australia Pty Ltd.
- Filter assembly and method of making a filter assembly16 Dec 2008US 7,465,330 B2Simatelex Manufacturing Company Limited
- Filter for oil containing adhesive contaminants10 Oct 2006US 7,118,673 B2HTI Filtration Corporation
- Filter cartridge assembly28 Dec 2004US 6,835,309 B2Filter Technology Australia Pty Ltd.
- Apparatus for separating water from a fluid22 Jun 1999US 5,914,035 ALucas Industries Limited
- Control valve apparatus29 Mar 2018US 2018/0085688 A1Nidec Tosok Corporation
- Filter assembly and method of making a filter assembly28 Dec 2006US 2006/0288675 A1Simatelex Manufacturing Company Limited
- Filter unit24 Mar 2005US 2005/0061723 A1Kyosan Denki Co., Ltd.
- Filter for oil containing adhesive contaminants21 Oct 2004US 2004/0206684 A1HTI Filtration Corporation
- Filter cartridge assembly2 Sep 2004US 2004/0168966 A1Filter Technology Australia Pty Ltd.
Most cited
By later US patents
- Blood filter with concentric pleats and method of use111US 5,651,765 AAvecor Cardiovascular, Inc. · 1997
- Composite oil filter59US 4,751,901 A1988
- Filter medium forming system and process59US 4,940,500 ATsuchiya Mfg. Co., Ltd. · 1990
- Method of manufacturing a fluid filter50US 5,782,791 AAvecor Cardiovascular, Inc. · 1998
- Advanced dual filtering apparatus48US 4,591,434 A1986