C22B 23/0446
With an ammoniacal liquor or with a hydroxide of an alkali or
Official title: {with an ammoniacal liquor or with a hydroxide of an alkali or alkaline-earth metal}
C22B23/0446 (With an ammoniacal liquor or with a hydroxide of an alkali or) appears on 75 US grants and 65 published applications in this corpus.
Search patents in C22B- Granted patents
- 75
- Published applications
- 65
- Assignees
- 64
- Inventors
- 195
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 5 |
| 2011 | 0 | 2 |
| 2012 | 2 | 4 |
| 2013 | 2 | 2 |
| 2014 | 4 | 6 |
| 2015 | 4 | 1 |
| 2016 | 1 | 6 |
| 2017 | 1 | 1 |
| 2018 | 5 | 4 |
| 2019 | 2 | 3 |
| 2020 | 2 | 0 |
| 2021 | 1 | 1 |
| 2022 | 3 | 2 |
| 2023 | 2 | 6 |
| 2024 | 3 | 7 |
| 2025 | 1 | 6 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbonation and selective leaching for the recovery of metals11 Aug 2026US 12,703,894 B2Phoenix Tailings, Inc.
- Method for recovering valuable materials from batteries7 Jul 2026US 12,676,351 B2University of Kentucky Research Foundation
- Method for manufacturing catalysts with reduced attrition29 Jul 2025US 12,370,531 B2W. R. Grace & Co.-Conn.
- Method for extracting valuable metal from low-matte nickel converter slag25 Jun 2024US 12,018,346 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Method for preparing nickel sulfate from nickel-iron-copper alloy9 Apr 2024US 11,952,289 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Method for reproducing valuable metal11 Jun 2026US 2026/0159410 A1Prime Planet Energy & Solutions, Inc.
- Method for reproducing positive electrode material11 Jun 2026US 2026/0163095 A1Prime Planet Energy & Solutions, Inc.
- Method for reproducing valuable metal11 Jun 2026US 2026/0163096 A1Prime Planet Energy & Solutions, Inc.
- Method for processing lithium-ion battery waste23 Apr 2026US 2026/0110050 A1Mec Company Ltd.
- Method for recycling positive electrode material19 Mar 2026US 2026/0078465 A1Prime Planet Energy & Solutions, Inc.
Most cited
By later US patents
- 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
- Process for recovering valuable metals from superalloy scrap30US 4,138,249 ACabot Corporation · 1979
- Hydrometallurgical process for extracting metal values from complex ores containing arsenic and sulfur23US 4,405,569 ASulpetro Minerals Limited · 1983
- Leaching cobalt from spent hydroprocessing catalysts with sulfur dioxide23US 4,432,953 AChevron Research Company · 1984