B01J 39/26
Cation exchangers for chromatographic processes
B01J39/26 (Cation exchangers for chromatographic processes) appears on 323 US grants and 308 published applications in this corpus.
Search patents in B01J- Granted patents
- 323
- Published applications
- 308
- Assignees
- 175
- Inventors
- 755
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 10 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 3 |
| 2002 | 7 | 7 |
| 2003 | 4 | 4 |
| 2004 | 6 | 15 |
| 2005 | 8 | 15 |
| 2006 | 10 | 14 |
| 2007 | 7 | 8 |
| 2008 | 9 | 9 |
| 2009 | 4 | 13 |
| 2010 | 11 | 15 |
| 2011 | 3 | 8 |
| 2012 | 9 | 15 |
| 2013 | 7 | 9 |
| 2014 | 8 | 18 |
| 2015 | 11 | 17 |
| 2016 | 10 | 20 |
| 2017 | 16 | 16 |
| 2018 | 10 | 17 |
| 2019 | 13 | 20 |
| 2020 | 19 | 9 |
| 2021 | 7 | 15 |
| 2022 | 10 | 13 |
| 2023 | 15 | 6 |
| 2024 | 9 | 9 |
| 2025 | 5 | 7 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for efficiently extracting and separating high-purity tetrodotoxin from pufferfish viscera18 Aug 2026US 12,709,618 B2Zhongyang Biotechnology (Shanghai) Co., LTD.
- Continuous ion exchange processes for separating rare earth elements16 Jun 2026US 12,655,499 B2
- Process for producing purified PAC's and sugar from fruit juice, and compositions comprising same3 Feb 2026US 12,538,935 B2West Invest SA
- Multi-modal ion-exchange membranes for rapid separations2 Dec 2025US 12,485,364 B2Clemson University Research Foundation
- Solid phase extraction methods for enhanced removal of phospholipids from biological samples11 Nov 2025US 12,467,837 B2Waters Technologies Corporation
- Novel materials and methods for refining processes17 Sep 2026US 2026/0273436 A1Lihme Protein Solutions ApS
- Filler for ion exchange chromatography, method for producing same, and method for measuring hemoglobin component3 Sep 2026US 2026/0257216 A1Sekisui Medical Co., Ltd.
- Method for preparing schiff base-modified ionic framework material and use thereof in advanced purification of 177 lu-containing medical wastewater23 Apr 2026US 2026/0108871 A1Southwest University of Science and Technology
- Devices, chromatography columns, methods for automated chromatography in parallel and methods for purification of extracellular vesicles9 Apr 2026US 2026/0098244 A1President and Fellows of Harvard College
- Multi-Modal Ion-Exchange Membranes for Rapid Separations12 Mar 2026US 2026/0070002 A1Clemson University
Most cited
By later US patents
- Affinity matrices of modified polysaccharide supports427US 5,059,654 ACuno Incorporated · 1991
- Modified siliceous chromatographic supports159US 4,724,207 ACuno Incorporated · 1988
- pH dependent ion exchange matrix and method of use in the isolation of nucleic acids125US 6,310,199 B1Promega Corporation · 2001
- Composite materials comprising supported porous gels116US 7,316,919 B2Nysa Membrane Technologies · 2008
- Polymeric microbeads and method of preparation110US 5,583,162 ABiopore Corporation · 1996