B01D 2201/02
Filtering elements having a conical form
B01D2201/02 (Filtering elements having a conical form) appears on 305 US grants and 207 published applications in this corpus.
Search patents in B01D- Granted patents
- 305
- Published applications
- 207
- Assignees
- 199
- Inventors
- 595
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 14 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 9 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 2 |
| 2002 | 8 | 11 |
| 2003 | 12 | 13 |
| 2004 | 10 | 10 |
| 2005 | 8 | 9 |
| 2006 | 5 | 4 |
| 2007 | 7 | 6 |
| 2008 | 2 | 6 |
| 2009 | 3 | 4 |
| 2010 | 3 | 7 |
| 2011 | 5 | 8 |
| 2012 | 8 | 7 |
| 2013 | 4 | 12 |
| 2014 | 6 | 7 |
| 2015 | 4 | 9 |
| 2016 | 4 | 7 |
| 2017 | 3 | 7 |
| 2018 | 6 | 9 |
| 2019 | 10 | 11 |
| 2020 | 12 | 8 |
| 2021 | 2 | 8 |
| 2022 | 7 | 11 |
| 2023 | 7 | 11 |
| 2024 | 6 | 8 |
| 2025 | 10 | 10 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Conical filter341US 5,902,364 ADonaldson Company, Inc. · 1999
- Open flow filter with safety element214US 6,416,561 B1Nelson Industries, Inc. · 2002
- Multi-element cylindrical filter with equalized flow185US 6,511,599 B2Nelson Industries, Inc. · 2003
- Additional flow filter144US 6,641,637 B2Nelson Industries, Inc. · 2003
- Bubble trap for phase-separating gas bubbles from flowing liquids100US 4,806,135 A1989