B01J 47/02
Column or bed processes
B01J47/02 (Column or bed processes) appears on 751 US grants and 666 published applications in this corpus.
Search patents in B01J- Granted patents
- 751
- Published applications
- 666
- Assignees
- 485
- Inventors
- 1,684
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 12 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 14 | 0 |
| 1986 | 8 | 0 |
| 1987 | 20 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 12 | 0 |
| 1993 | 22 | 0 |
| 1994 | 13 | 0 |
| 1995 | 17 | 0 |
| 1996 | 15 | 0 |
| 1997 | 17 | 0 |
| 1998 | 17 | 0 |
| 1999 | 15 | 0 |
| 2000 | 13 | 0 |
| 2001 | 27 | 2 |
| 2002 | 19 | 18 |
| 2003 | 10 | 21 |
| 2004 | 11 | 24 |
| 2005 | 10 | 30 |
| 2006 | 13 | 29 |
| 2007 | 14 | 17 |
| 2008 | 10 | 14 |
| 2009 | 14 | 11 |
| 2010 | 13 | 13 |
| 2011 | 8 | 11 |
| 2012 | 8 | 21 |
| 2013 | 7 | 21 |
| 2014 | 14 | 23 |
| 2015 | 20 | 29 |
| 2016 | 8 | 14 |
| 2017 | 24 | 31 |
| 2018 | 20 | 23 |
| 2019 | 19 | 37 |
| 2020 | 35 | 46 |
| 2021 | 19 | 50 |
| 2022 | 25 | 42 |
| 2023 | 35 | 33 |
| 2024 | 34 | 42 |
| 2025 | 32 | 37 |
| 2026 | 15 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Pure water systems25 Aug 2026US 12,715,790 B2Unger Marketing International, LLC
- Resin for removing phosphorus from water body, and preparation method therefor and application thereof25 Aug 2026US 12,715,791 B2Sunresin New Materials Co. Ltd.
- Continuous ion exchange processes for separating rare earth elements16 Jun 2026US 12,655,499 B2
- Regeneration of anion exchange resins1 Oct 2026US 2026/0295573 A1
- 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
- Split resin bed, low pressure drop, and replaceable cartridge deionization filter20 Aug 2026US 2026/0241312 A1Atmus Filtration Inc.
Most cited
By later US patents
- 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
- Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions140US 4,636,296 A1987