B01D 15/1807
Using counter-currents
Official title: {using counter-currents, e.g. fluidised beds}
B01D15/1807 (Using counter-currents) appears on 187 US grants and 182 published applications in this corpus.
Search patents in B01D- Granted patents
- 187
- Published applications
- 182
- Assignees
- 123
- Inventors
- 369
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 4 |
| 2003 | 5 | 2 |
| 2004 | 3 | 9 |
| 2005 | 3 | 7 |
| 2006 | 3 | 5 |
| 2007 | 4 | 5 |
| 2008 | 3 | 4 |
| 2009 | 0 | 2 |
| 2010 | 5 | 10 |
| 2011 | 6 | 1 |
| 2012 | 1 | 4 |
| 2013 | 3 | 3 |
| 2014 | 1 | 8 |
| 2015 | 6 | 6 |
| 2016 | 3 | 5 |
| 2017 | 8 | 8 |
| 2018 | 6 | 10 |
| 2019 | 7 | 18 |
| 2020 | 8 | 14 |
| 2021 | 7 | 9 |
| 2022 | 11 | 11 |
| 2023 | 8 | 13 |
| 2024 | 9 | 9 |
| 2025 | 8 | 10 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Continuous Ion Exchange Processes for Separating Rare Earth Elements12 Mar 2026US 2026/0071298 A1
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Most cited
By later US patents
- Magnetic particles for use in separations333US 4,554,088 AAdvanced Magnetics, Inc. · 1985
- Magnetic particles for use in separations245US 4,672,040 AAdvanced Magnetics, Inc. · 1987
- Binding assays employing magnetic particles152US 4,628,037 AAdvanced Magnetics, Inc. · 1986
- Column with macroporous polymer media132US 5,334,310 ACornell Research Foundation, Inc. · 1994
- Enzymatic reactions using magnetic particles128US 4,698,302 AAdvanced Magnetics, Inc. · 1987