B01D 15/18
Relating to flow patterns
Official title: relating to flow patterns
B01D15/18 (Relating to flow patterns) appears on 1,468 US grants and 1,687 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,468
- Published applications
- 1,687
- Assignees
- 782
- Inventors
- 3,467
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 13 | 0 |
| 1984 | 14 | 0 |
| 1985 | 11 | 0 |
| 1986 | 10 | 0 |
| 1987 | 14 | 0 |
| 1988 | 11 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 14 | 0 |
| 1992 | 22 | 0 |
| 1993 | 12 | 0 |
| 1994 | 4 | 0 |
| 1995 | 19 | 0 |
| 1996 | 18 | 0 |
| 1997 | 15 | 0 |
| 1998 | 17 | 0 |
| 1999 | 20 | 0 |
| 2000 | 29 | 0 |
| 2001 | 35 | 10 |
| 2002 | 46 | 27 |
| 2003 | 32 | 29 |
| 2004 | 26 | 48 |
| 2005 | 25 | 49 |
| 2006 | 27 | 35 |
| 2007 | 21 | 44 |
| 2008 | 21 | 43 |
| 2009 | 19 | 37 |
| 2010 | 32 | 54 |
| 2011 | 24 | 49 |
| 2012 | 41 | 49 |
| 2013 | 37 | 56 |
| 2014 | 41 | 73 |
| 2015 | 38 | 60 |
| 2016 | 43 | 68 |
| 2017 | 50 | 79 |
| 2018 | 57 | 87 |
| 2019 | 72 | 107 |
| 2020 | 80 | 103 |
| 2021 | 74 | 92 |
| 2022 | 63 | 105 |
| 2023 | 54 | 132 |
| 2024 | 74 | 98 |
| 2025 | 73 | 91 |
| 2026 | 56 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 15/1814Recycling of the fraction to be distributed574
- B01D 15/1864Using two or more columns462
- B01D 15/1892The sorbent material moving as a whole197
- B01D 15/1807Using counter-currents187
- B01D 15/1896Membrane chromatography or membrane adsorbers164
- B01D 15/1894Liquid-liquid chromatography66
- B01D 15/1801Radial flow35
Recent patents
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Most cited
By later US patents
- Magnetic particles for use in separations333US 4,554,088 AAdvanced Magnetics, Inc. · 1985
- Flow-injection analysis and variable-flow light-scattering methods and apparatus for characterizing polymers317US 6,175,409 B1Symyx Technologies, Inc. · 2001
- Magnetic particles for use in separations245US 4,672,040 AAdvanced Magnetics, Inc. · 1987
- Use of retentate chromatography to generate difference maps229US 6,225,047 B1Ciphergen Biosystems, Inc. · 2001
- Support for high performance affinity chromatography and other uses216US 6,277,489 B1The Regents of the University of California · 2001