B01J 49/50
Regeneration or reactivation of ion-exchangers: characterised by the regeneration reagents
Official title: characterised by the regeneration reagents
B01J49/50 (Regeneration or reactivation of ion-exchangers: characterised by the regeneration reagents) appears on 310 US grants and 413 published applications in this corpus.
Search patents in B01J- Granted patents
- 310
- Published applications
- 413
- Assignees
- 299
- Inventors
- 963
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 5 |
| 2002 | 12 | 7 |
| 2003 | 6 | 8 |
| 2004 | 3 | 8 |
| 2005 | 6 | 10 |
| 2006 | 3 | 5 |
| 2007 | 5 | 9 |
| 2008 | 6 | 8 |
| 2009 | 7 | 10 |
| 2010 | 8 | 13 |
| 2011 | 6 | 13 |
| 2012 | 4 | 13 |
| 2013 | 8 | 17 |
| 2014 | 10 | 19 |
| 2015 | 10 | 19 |
| 2016 | 9 | 24 |
| 2017 | 24 | 16 |
| 2018 | 22 | 19 |
| 2019 | 12 | 23 |
| 2020 | 18 | 24 |
| 2021 | 18 | 21 |
| 2022 | 13 | 24 |
| 2023 | 15 | 23 |
| 2024 | 14 | 24 |
| 2025 | 19 | 27 |
| 2026 | 8 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Process for removing cyanide from a cyanide-bearing aqueous fluid21 Apr 2026US 12,606,462 B2Commonwealth Scientific and Industrial Research Organisation
- Regeneration of anion exchange resins1 Oct 2026US 2026/0295573 A1
- 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.
- Processes for removing perfluoroalkyl substances and regenerating an adsorbent used with same30 Jul 2026US 2026/0216550 A1Uop LLC
Most cited
By later US patents
- Method for recovering fluorinated alkanoic acids from waste waters62US 6,613,941 B13M Innovative Properties Company · 2003
- 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
- Process for the elution of fluorinated emulsifiers30US 6,436,244 B1Dyneon LLC · 2002
- Process for the removal and destruction of perchlorate and nitrate from aqueous streams28US 6,066,257 ACalgon Carbon Corporation · 2000