B01J 39/04
Processes using organic exchangers
B01J39/04 (Processes using organic exchangers) appears on 609 US grants and 674 published applications in this corpus.
Search patents in B01J- Granted patents
- 609
- Published applications
- 674
- Assignees
- 513
- Inventors
- 1,895
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 13 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 13 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 3 |
| 2002 | 13 | 16 |
| 2003 | 9 | 17 |
| 2004 | 7 | 26 |
| 2005 | 13 | 15 |
| 2006 | 15 | 15 |
| 2007 | 17 | 13 |
| 2008 | 8 | 12 |
| 2009 | 6 | 12 |
| 2010 | 6 | 14 |
| 2011 | 10 | 16 |
| 2012 | 8 | 26 |
| 2013 | 11 | 26 |
| 2014 | 13 | 30 |
| 2015 | 18 | 26 |
| 2016 | 21 | 32 |
| 2017 | 25 | 36 |
| 2018 | 29 | 32 |
| 2019 | 27 | 51 |
| 2020 | 34 | 35 |
| 2021 | 27 | 51 |
| 2022 | 22 | 37 |
| 2023 | 31 | 36 |
| 2024 | 26 | 37 |
| 2025 | 18 | 29 |
| 2026 | 16 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dry ion exchange resin manufacturing method and manufacturing device, and treatment target liquid purifying method and purifying device15 Sep 2026US 12,734,517 B2Organo Corporation
- Cation exchange membrane and method for producing same1 Sep 2026US 12,722,125 B2Astom Corporation
- Resin for removing phosphorus from water body, and preparation method therefor and application thereof25 Aug 2026US 12,715,791 B2Sunresin New Materials Co. Ltd.
- 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
- Separation and purification of chemicals using ion-exchange resins17 Sep 2026US 2026/0273519 A1Materials Engineering and Technical Support Services
- Filler for ion exchange chromatography, method for producing same, and method for measuring hemoglobin component3 Sep 2026US 2026/0257216 A1Sekisui Medical Co., Ltd.
- Process for recovery of lithium from brine3 Sep 2026US 2026/0257931 A1Aquatech International Corporation
- Water treatment apparatus and control method of water treatment apparatus20 Aug 2026US 2026/0242258 A1Samsung Electronics Co., Ltd.
- Stepwise Chemical Separation Methods and Systems Using Resin Packed Columns20 Aug 2026US 2026/0245761 A1SHINE Technologies, LLC
Most cited
By later US patents
- Method and apparatus for filtration with plural ultraviolet treatment stages112US 5,236,595 AInternational Environmental Systems, Inc., USA · 1993
- Method and system for purifying liquid88US 3,985,648 AAlmag Pollution Control Corporation · 1976
- Ion exchange treatment for removing toxic metals and cyanide values from waste waters73US 4,321,145 A1982
- Removal of iodide compounds from non-aqueous organic media62US 4,615,806 ACelanese Corporation · 1986
- Contamination removal system employing filtration and plural ultraviolet and chemical treatment steps and treatment mode controller62US 5,190,659 AInternational Environmental Systems, Inc. · 1993