C22B 23/0476
Separation of nickel from cobalt
Official title: {Separation of nickel from cobalt}
C22B23/0476 (Separation of nickel from cobalt) appears on 77 US grants and 103 published applications in this corpus.
Search patents in C22B- Granted patents
- 77
- Published applications
- 103
- Assignees
- 96
- Inventors
- 307
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
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| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 2 |
| 2003 | 0 | 1 |
| 2004 | 3 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 2 |
| 2010 | 1 | 5 |
| 2011 | 4 | 5 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 4 | 3 |
| 2015 | 3 | 4 |
| 2016 | 3 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 4 |
| 2020 | 2 | 3 |
| 2021 | 1 | 7 |
| 2022 | 2 | 8 |
| 2023 | 2 | 6 |
| 2024 | 9 | 15 |
| 2025 | 11 | 14 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrometallurgical recovery method for nickel sulfate26 May 2026US 12,637,736 B2Ecopro Materials Co., Ltd.
- Solvent extraction method using two-stage extraction for separation and recovery of nickel, cobalt, and manganese28 Apr 2026US 12,612,678 B2Ecopro Materials Co., Ltd.
- Process for preparing a high-purity nickel sulphate solution30 Dec 2025US 12,509,361 B2Umicore AG & Co. KG
- Method for reducing waste by recovering transition metals from lithium secondary battery21 Oct 2025US 12,451,533 B2SK Innovation Co., Ltd.
- Method for recycling lithium batteries9 Sep 2025US 12,412,941 B2Duesenfeld GmbH
- Novel separation methods10 Sep 2026US 2026/0265865 A1The Trustees of the University of Pennsylvania
- Process for extracting metals from lithium-ion batteries13 Aug 2026US 2026/0234749 A1Arabat S.R.L.
- Treatment method of waste battery23 Jul 2026US 2026/0209888 A1Kemco
- Selective Acid Leaching of Mixed Hydroxide Precipitate11 Jun 2026US 2026/0159918 A1Solvay SA
- Method for reproducing positive electrode material11 Jun 2026US 2026/0163095 A1Prime Planet Energy & Solutions, Inc.
Most cited
By later US patents
- Process for extraction of metal from an ore or concentrate containing nickel and/or cobalt30US 6,171,564 B2Cominco Engineering Services Ltd. · 2001
- Nickel and cobalt recovery using continuous ion exchange23US 9,068,247 B2Dow Global Technologies LLC · 2015
- Process for the extraction of copper from a sulphide copper ore or concentrate20US 6,455,019 B2Cominco Engineering Services Ltd. · 2002
- Method of ore processing19US 9,447,480 B2The University of Queensland · 2016
- Method for separating radioactive copper using chelating-ion exchange resin15US 8,647,595 B2Japan Atomic Energy Agency · 2014