B01D 15/1864
Using two or more columns
Official title: {using two or more columns}
B01D15/1864 (Using two or more columns) appears on 462 US grants and 705 published applications in this corpus.
Search patents in B01D- Granted patents
- 462
- Published applications
- 705
- Assignees
- 335
- Inventors
- 1,554
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 6 |
| 2002 | 19 | 13 |
| 2003 | 11 | 10 |
| 2004 | 11 | 14 |
| 2005 | 9 | 9 |
| 2006 | 5 | 9 |
| 2007 | 3 | 9 |
| 2008 | 1 | 10 |
| 2009 | 3 | 15 |
| 2010 | 8 | 14 |
| 2011 | 6 | 16 |
| 2012 | 8 | 11 |
| 2013 | 9 | 16 |
| 2014 | 12 | 33 |
| 2015 | 10 | 29 |
| 2016 | 11 | 28 |
| 2017 | 17 | 34 |
| 2018 | 27 | 33 |
| 2019 | 23 | 46 |
| 2020 | 34 | 49 |
| 2021 | 28 | 50 |
| 2022 | 25 | 50 |
| 2023 | 22 | 66 |
| 2024 | 38 | 43 |
| 2025 | 41 | 51 |
| 2026 | 36 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Preparative system15 Sep 2026US 12,736,507 B2Shimadzu Corporation
- Continuous liquid-liquid chromatographic separation of chemical species using multiple liquid phases and related systems and articles18 Aug 2026US 12,708,864 B2Zaiput Flow Technologies LLC
- Method of producing and refining carrier-free lutetium-177 using chromatography11 Aug 2026US 12,703,897 B2Korea Atomic Energy Research Institute
- Parallel chromatography systems and methods4 Aug 2026US 12,697,566 B2Amgen Inc.
- Continuous ion exchange processes for separating rare earth elements16 Jun 2026US 12,655,499 B2
- Process for using modified dtpa-associated organosilica media for producing individually separated high purity rare earth elements8 Oct 2026US 2026/0308717 A1Wayne State University
- Analysis system, control method thereof, and recording medium24 Sep 2026US 2026/0287563 A1Shimadzu Corporation
- Liquid chromatography piston17 Sep 2026US 2026/0276606 A1Changzhou Ruixi Biotechnology Co., Ltd.
- Water purification for electrochemical systems and associated methods10 Sep 2026US 2026/0265941 A1Hyaxiom, Inc.
- System and method for thin layer chromatography10 Sep 2026US 2026/0266784 A1
Most cited
By later US patents
- Flow-injection analysis and variable-flow light-scattering methods and apparatus for characterizing polymers317US 6,175,409 B1Symyx Technologies, Inc. · 2001
- Use of retentate chromatography to generate difference maps229US 6,225,047 B1Ciphergen Biosystems, Inc. · 2001
- Rapid characterization of polymers120US 6,406,632 B1Symyx Technologies, Inc. · 2002
- Indirect calibration of polymer characterization systems118US 6,294,388 B1Symyx Technologies, Inc. · 2001
- Discontinuous countercurrent chromatographic process and apparatus117US 5,630,943 AMerck Patent GmbH · 1997