B01J 49/05
Regeneration or reactivation of ion-exchangers: of fixed beds
Official title: of fixed beds
B01J49/05 (Regeneration or reactivation of ion-exchangers: of fixed beds) appears on 319 US grants and 341 published applications in this corpus.
Search patents in B01J- Granted patents
- 319
- Published applications
- 341
- Assignees
- 258
- Inventors
- 833
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 9 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 6 |
| 2003 | 2 | 5 |
| 2004 | 5 | 10 |
| 2005 | 4 | 12 |
| 2006 | 5 | 10 |
| 2007 | 7 | 10 |
| 2008 | 7 | 11 |
| 2009 | 4 | 8 |
| 2010 | 6 | 11 |
| 2011 | 5 | 12 |
| 2012 | 5 | 19 |
| 2013 | 9 | 21 |
| 2014 | 14 | 17 |
| 2015 | 15 | 14 |
| 2016 | 7 | 18 |
| 2017 | 18 | 9 |
| 2018 | 16 | 15 |
| 2019 | 10 | 22 |
| 2020 | 18 | 18 |
| 2021 | 14 | 17 |
| 2022 | 10 | 21 |
| 2023 | 9 | 13 |
| 2024 | 9 | 14 |
| 2025 | 14 | 19 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device and method for passive collection of atmospheric carbon dioxide with a double-walled harvest chamber29 Sep 2026US 12,746,508 B2Arizona Board of Regents on behalf of Arizona State University
- Resin for removing phosphorus from water body, and preparation method therefor and application thereof25 Aug 2026US 12,715,791 B2Sunresin New Materials Co. Ltd.
- Process for removing cyanide from a cyanide-bearing aqueous fluid21 Apr 2026US 12,606,462 B2Commonwealth Scientific and Industrial Research Organisation
- Adsorbent, its preparation and use3 Feb 2026US 12,539,502 B2City University of Hong Kong
- Oxygenated hydrocarbon production system with acidic impurity removal resin column16 Dec 2025US 12,497,372 B2SipChem Sahara International Petrochemical Company JSC
- Regeneration of anion exchange resins1 Oct 2026US 2026/0295573 A1
- Method for separating and regenerating anion exchange resin and cation exchange resin of mixed ion exchange resin20 Aug 2026US 2026/0241378 A1Kurita Water Industries Ltd.
- Method for producing lithium-containing solution25 Jun 2026US 2026/0175197 A1Sumitomo Metal Mining Co., Ltd.
- Novel regeneration of mixed bed ion exchange resins for seawater desalination14 May 2026US 2026/0132058 A1Hydric Desalination Pty Ltd
- Method for producing cation exchange resin and method for refining organic acid solution12 Feb 2026US 2026/0042089 A1Organo Corporation
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
- Recovery of fluorinated emulsifying acids from basic anion exchangers76US 4,282,162 AHoechst Aktiengesellschaft · 1981
- Ion exchange treatment for removing toxic metals and cyanide values from waste waters73US 4,321,145 A1982
- Water recycling system63US 4,246,101 APure Cycle Corporation · 1981
- Contamination removal system employing filtration and plural ultraviolet and chemical treatment steps and treatment mode controller62US 5,190,659 AInternational Environmental Systems, Inc. · 1993