C22B 23/0461
By chemical methods
Official title: {by chemical methods}
C22B23/0461 (By chemical methods) appears on 320 US grants and 474 published applications in this corpus.
Search patents in C22B- Granted patents
- 320
- Published applications
- 474
- Assignees
- 236
- Inventors
- 992
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 7 | 4 |
| 2003 | 2 | 2 |
| 2004 | 7 | 3 |
| 2005 | 1 | 7 |
| 2006 | 2 | 4 |
| 2007 | 2 | 8 |
| 2008 | 4 | 10 |
| 2009 | 4 | 13 |
| 2010 | 7 | 15 |
| 2011 | 11 | 15 |
| 2012 | 8 | 9 |
| 2013 | 12 | 13 |
| 2014 | 8 | 11 |
| 2015 | 16 | 26 |
| 2016 | 9 | 11 |
| 2017 | 13 | 9 |
| 2018 | 11 | 10 |
| 2019 | 8 | 5 |
| 2020 | 12 | 13 |
| 2021 | 5 | 14 |
| 2022 | 5 | 20 |
| 2023 | 7 | 49 |
| 2024 | 29 | 69 |
| 2025 | 31 | 78 |
| 2026 | 16 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods for battery-grade aqueous solutions of nickel salts18 Aug 2026US 12,709,552 B2Bluegrass Infrastructure Partners Holdings, LLC
- Comprehensive utilization method for valuable elements in hydrometallurgical slag of laterite nickel ore23 Jun 2026US 12,662,715 B2Gem Co., Ltd.
- Production method for cobalt sulfate26 May 2026US 12,637,361 B2Sumitomo Metal Mining Co., Ltd.
- 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.
- Method for the recovery of metals from e-waste10 Sep 2026US 2026/0265859 A1Renewable Metals Pty Ltd
- System and method for reducing moisture content and impurity content of nickel cobalt hydroxide27 Aug 2026US 2026/0250153 A1Gem Co., Ltd.
- Method for extracting nickel-cobalt-manganese from laterite nickel ore by acid leaching27 Aug 2026US 2026/0250801 A1Gem Co., Ltd.
- Green method for hydrometallurgical production of nickel-cobalt-manganese new energy raw material from laterite nickel ore20 Aug 2026US 2026/0242242 A1Gem Co., Ltd.
- Short-flow nickel-cobalt-manganese co-extraction process for laterite nickel ore hydrometallurgy20 Aug 2026US 2026/0242894 A1Gem Co., Ltd.
Most cited
By later US patents
- Method of purifying acid leaching solution by precipitation and oxidation29US 6,406,676 B1Boliden Mineral AB · 2002
- Process for the recovery of nickel25US 5,976,218 AHenkel Corporation · 1999
- Process for separating and recovering base metals from used hydroprocessing catalyst25US 7,846,404 B2Chevron U.S.A.Inc. · 2010
- Method for producing cobalt metal powder24US 4,348,224 AGTE Products Corporation · 1982
- Method for producing cobaltic hexammine compounds and cobalt metal powder23US 4,218,240 AGTE Products Corporation · 1980