B01J 20/287
Non-polar phases
Official title: Non-polar phases; Reversed phases
B01J20/287 (Non-polar phases) appears on 223 US grants and 213 published applications in this corpus.
Search patents in B01J- Granted patents
- 223
- Published applications
- 213
- Assignees
- 149
- Inventors
- 571
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 6 |
| 2002 | 12 | 15 |
| 2003 | 11 | 9 |
| 2004 | 7 | 12 |
| 2005 | 4 | 17 |
| 2006 | 12 | 11 |
| 2007 | 6 | 9 |
| 2008 | 5 | 7 |
| 2009 | 2 | 11 |
| 2010 | 7 | 11 |
| 2011 | 2 | 7 |
| 2012 | 6 | 5 |
| 2013 | 7 | 5 |
| 2014 | 3 | 6 |
| 2015 | 5 | 10 |
| 2016 | 7 | 7 |
| 2017 | 3 | 2 |
| 2018 | 5 | 5 |
| 2019 | 2 | 8 |
| 2020 | 7 | 13 |
| 2021 | 3 | 5 |
| 2022 | 7 | 7 |
| 2023 | 4 | 5 |
| 2024 | 3 | 10 |
| 2025 | 8 | 7 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Double surface modified porous material with minimized nonspecific interaction17 Feb 2026US 12,551,864 B2Waters Technologies Corporation
- Chromatographic media and methods of making and using same25 Nov 2025US 12,478,947 B2Immnutrix Therapeutics, Inc.
- Method for tracing subterranean formations with oil-soluble organic molecular tracers and extracting them of from oil phases14 Oct 2025US 12,440,821 B2Saudi Arabian Oil Company
- Chromatographic column having stationary phase thickness gradient23 Sep 2025US 12,420,262 B2The Regents of the University of Michigan
- Chromatographic analysis with low pressure dual gradient refocusing23 Sep 2025US 12,422,414 B2Evosep Aps
- Composition and methods for cleaning9 Jul 2026US 2026/0192281 A1Genzyme Corporation
- Chromatographic media and methods of making and using same26 Feb 2026US 2026/0054249 A1Immutrix Therapeutics, Inc.
- Purification of biological particles29 Jan 2026US 2026/0028597 A1Cytiva BioProcess R&D AB
- Method for analyzing modified nucleoside18 Dec 2025US 2025/0382669 A1AiSTI SCIENCE CO., Ltd.
- Mixed mode chromatographic packing material4 Sep 2025US 2025/0276301 A1
Most cited
By later US patents
- Use of retentate chromatography to generate difference maps229US 6,225,047 B1Ciphergen Biosystems, Inc. · 2001
- Modified siliceous chromatographic supports159US 4,724,207 ACuno Incorporated · 1988
- Packing material for reversed phase chromatography and process for its preparation84US 5,194,333 ATosoh Corporation · 1993
- Spherical SiO.sub.2 particles83US 4,775,520 AMerck Patent GmbH · 1988
- Substrates with sterically-protected, stable, covalently-bonded organo-silane films80US 4,705,725 AE. I. Du Pont de Nemours and Company · 1987