B01J 47/00
Ion-exchange processes in general
Official title: Ion-exchange processes in general; Apparatus therefor (ion-exchange chromatography processes or apparatus B01D15/08)
B01J47/00 (Ion-exchange processes in general) appears on 1,740 US grants and 1,554 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,740
- Published applications
- 1,554
- Assignees
- 1,010
- Inventors
- 3,982
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 24 | 0 |
| 1978 | 33 | 0 |
| 1979 | 20 | 0 |
| 1980 | 30 | 0 |
| 1981 | 30 | 0 |
| 1982 | 39 | 0 |
| 1983 | 32 | 0 |
| 1984 | 27 | 0 |
| 1985 | 30 | 0 |
| 1986 | 26 | 0 |
| 1987 | 38 | 0 |
| 1988 | 27 | 0 |
| 1989 | 15 | 0 |
| 1990 | 24 | 0 |
| 1991 | 23 | 0 |
| 1992 | 26 | 0 |
| 1993 | 34 | 0 |
| 1994 | 30 | 0 |
| 1995 | 26 | 0 |
| 1996 | 24 | 0 |
| 1997 | 38 | 0 |
| 1998 | 29 | 0 |
| 1999 | 25 | 0 |
| 2000 | 23 | 0 |
| 2001 | 36 | 2 |
| 2002 | 26 | 36 |
| 2003 | 26 | 41 |
| 2004 | 31 | 55 |
| 2005 | 22 | 59 |
| 2006 | 24 | 58 |
| 2007 | 30 | 35 |
| 2008 | 26 | 35 |
| 2009 | 26 | 40 |
| 2010 | 28 | 36 |
| 2011 | 23 | 50 |
| 2012 | 27 | 46 |
| 2013 | 22 | 55 |
| 2014 | 27 | 51 |
| 2015 | 49 | 66 |
| 2016 | 36 | 49 |
| 2017 | 48 | 81 |
| 2018 | 56 | 73 |
| 2019 | 62 | 82 |
| 2020 | 76 | 106 |
| 2021 | 56 | 91 |
| 2022 | 56 | 77 |
| 2023 | 64 | 85 |
| 2024 | 65 | 89 |
| 2025 | 61 | 85 |
| 2026 | 34 | 71 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01J 47/02Column or bed processes751
- B01J 47/12Ion-exchange processes in general: characterised by the use of ion-exchange material in404
- B01J 47/018Granulation221
- B01J 47/016Modification or after-treatment of ion-exchangers184
- B01J 47/10Ion-exchange processes in general: with moving ion-exchange material149
- B01J 47/14Controlling or regulating116
- B01J 47/014In which the adsorbent properties of the ion-exchanger are involved80
- B01J 47/012Ion-exchange processes in general: using portable ion-exchange apparatus70
All 10 subgroupsShow fewer
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
- Systems and methods for ion exchange apparatus15 Sep 2026US 12,735,335 B2
- Ion exchanger filter device and ion exchanger cartridge8 Sep 2026US 12,728,411 B2Mann+Hummel GmbH
- Cation exchange membrane and method for producing same1 Sep 2026US 12,722,125 B2Astom Corporation
- Formulations and processes for treating water from impacted sources25 Aug 2026US 12,714,991 B2Brown University
- Regeneration of anion exchange resins1 Oct 2026US 2026/0295573 A1
- Single-ion electrolytes for solid-state alkaline batteries24 Sep 2026US 2026/0291007 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Novel materials and methods for refining processes17 Sep 2026US 2026/0273436 A1Lihme Protein Solutions ApS
- Separation and purification of chemicals using ion-exchange resins17 Sep 2026US 2026/0273519 A1Materials Engineering and Technical Support Services
- Prussian-blue analogue (pba) ion-chromatography-based method for selective separation of rubidium from brine3 Sep 2026US 2026/0257932 A1Technion Research & Development Foundation Limited
Most cited
By later US patents
- Affinity matrices of modified polysaccharide supports427US 5,059,654 ACuno Incorporated · 1991
- Electrodeionization apparatus202US 4,632,745 AMillipore Corporation · 1986
- Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes157US 5,425,858 AThe Regents of the University of California · 1995
- Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack155US 5,066,375 AIonics, Incorporated · 1991
- Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions146US 4,687,561 A1987