C22B 23/04
Obtaining nickel or cobalt: by wet processes
Official title: {by wet processes (recovery or separation of nickel or cobalt using organic agents C22B3/00)}
C22B23/04 (Obtaining nickel or cobalt: by wet processes) appears on 745 US grants and 898 published applications in this corpus.
Search patents in C22B- Granted patents
- 745
- Published applications
- 898
- Assignees
- 480
- Inventors
- 1,975
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 17 | 0 |
| 1978 | 17 | 0 |
| 1979 | 10 | 0 |
| 1980 | 17 | 0 |
| 1981 | 12 | 0 |
| 1982 | 9 | 0 |
| 1983 | 18 | 0 |
| 1984 | 17 | 0 |
| 1985 | 17 | 0 |
| 1986 | 10 | 0 |
| 1987 | 11 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 13 | 0 |
| 2000 | 8 | 0 |
| 2001 | 14 | 2 |
| 2002 | 18 | 11 |
| 2003 | 7 | 4 |
| 2004 | 13 | 11 |
| 2005 | 4 | 10 |
| 2006 | 4 | 11 |
| 2007 | 4 | 16 |
| 2008 | 6 | 20 |
| 2009 | 12 | 18 |
| 2010 | 15 | 29 |
| 2011 | 14 | 27 |
| 2012 | 16 | 19 |
| 2013 | 20 | 24 |
| 2014 | 20 | 30 |
| 2015 | 27 | 44 |
| 2016 | 20 | 27 |
| 2017 | 24 | 19 |
| 2018 | 24 | 23 |
| 2019 | 18 | 16 |
| 2020 | 19 | 33 |
| 2021 | 16 | 38 |
| 2022 | 19 | 37 |
| 2023 | 18 | 83 |
| 2024 | 48 | 107 |
| 2025 | 55 | 141 |
| 2026 | 36 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for separating nickel from lithium, and application thereof22 Sep 2026US 12,742,225 B2Suzhou Botree Cycling Sci & Tech Co., Ltd
- Integration of carbon sequestration with selective hydrometallurgical recovery of metal values22 Sep 2026US 12,742,226 B2Negative Emissions Materials, Inc.
- Impurity control in lithium-ion battery recycling1 Sep 2026US 12,725,847 B2Bluegrass Infrastructure Partners Holdings, LLC
- Methods for battery-grade aqueous solutions of nickel salts18 Aug 2026US 12,709,552 B2Bluegrass Infrastructure Partners Holdings, LLC
- Carbonation and selective leaching for the recovery of metals11 Aug 2026US 12,703,894 B2Phoenix Tailings, Inc.
- Methods for carbon capture and metal recovery and related systems24 Sep 2026US 2026/0284595 A1Battelle Energy Alliance, LLC
- Recovery of lithium from black mass24 Sep 2026US 2026/0285700 A1Metso Finland Oy
- Process for extracting nickel from gasifier slag24 Sep 2026US 2026/0285702 A1Reliance Industries Limited
- Method for recovering metals from waste battery using magnetic field applied biological leaching process10 Sep 2026US 2026/0265858 A1Ak Tree Co., Ltd.
- Method for the recovery of metals from e-waste10 Sep 2026US 2026/0265859 A1Renewable Metals Pty Ltd
Most cited
By later US patents
- Method for producing nanoparticles of transition metals185US 6,262,129 B1International Business Machines Corporation · 2001
- Chloride assisted hydrometallurgical copper extraction52US 5,431,788 ACominco Engineering Services Ltd. · 1995
- Process for recovering molybdenum, vanadium, cobalt and nickel from roasted products of used catalysts from hydrotreatment desulfurization of petroleum48US 4,145,397 AFuji Fine Chemical Co. Ltd. · 1979
- Process for smelting nickel47US 4,466,828 AToyo Engineering Corporation · 1984
- Recovery of V.sub.2 O.sub.5 and nickel values from petroleum coke45US 4,443,415 AAmax Inc. · 1984