B01J 49/53
For cationic exchangers
Official title: for cationic exchangers
B01J49/53 (For cationic exchangers) appears on 168 US grants and 230 published applications in this corpus.
Search patents in B01J- Granted patents
- 168
- Published applications
- 230
- Assignees
- 162
- Inventors
- 522
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 3 |
| 2002 | 2 | 3 |
| 2003 | 3 | 4 |
| 2004 | 1 | 2 |
| 2005 | 4 | 2 |
| 2006 | 3 | 3 |
| 2007 | 3 | 2 |
| 2008 | 1 | 4 |
| 2009 | 1 | 5 |
| 2010 | 5 | 9 |
| 2011 | 5 | 10 |
| 2012 | 2 | 8 |
| 2013 | 6 | 12 |
| 2014 | 8 | 12 |
| 2015 | 7 | 9 |
| 2016 | 7 | 12 |
| 2017 | 14 | 7 |
| 2018 | 16 | 10 |
| 2019 | 5 | 14 |
| 2020 | 9 | 10 |
| 2021 | 5 | 12 |
| 2022 | 8 | 14 |
| 2023 | 9 | 13 |
| 2024 | 7 | 16 |
| 2025 | 9 | 17 |
| 2026 | 4 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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 producing lithium-containing solution23 Jun 2026US 12,662,389 B2Sumitomo Metal Mining Co., Ltd.
- Continuous ion exchange processes for separating rare earth elements16 Jun 2026US 12,655,499 B2
- Water softener26 May 2026US 12,636,643 B2Panasonic Intellectual Property Management Co., Ltd.
- Method for versatile ion-exchange extraction of lithium from natural or technological lithium-containing brine by using a lithium-selective inorganic sorbent2 Dec 2025US 12,486,556 B2
- Prussian-blue analogue (pba) ion-chromatography-based method for selective separation of rubidium from brine3 Sep 2026US 2026/0257932 A1Technion Research & Development Foundation Limited
- 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 solution13 Aug 2026US 2026/0234748 A1Sumitomo Metal Mining Co., Ltd.
- Polyimide Membranes with Tunable Functionalization for Selective Removal of Per- and Polyfluoroalkyl Substances (PFAS)23 Jul 2026US 2026/0208122 A1Polykala Technologies, LLC
- Method for recycling iron ions and preparing iron(iii) phosphate16 Jul 2026US 2026/0200734 A1Hydroionic Technologies Co., Ltd.
Most cited
By later US patents
- Low metal, low water biomass-derived pyrolysis oils and methods for producing the same40US 8,524,087 B2Uop LLC · 2013
- Lithium recovery device using separator reservoir, lithium recovery method and lithium adsorption/desorption system using the same40US 8,741,150 B2Korea Institute of Geosciences and Mineral Resources · 2014
- Leachate and wastewater remediation system26US 6,960,301 B2New Earth Systems, Inc. · 2005
- Method for recovering and treating brine from water softener regeneration23US 4,207,397 AWater Refining Company, Inc. · 1980
- Purification of ammonia22US 6,969,466 B1Puritan Products, Inc. · 2005