C22B 15/0078
With ammoniacal solutions
Official title: {with ammoniacal solutions, e.g. ammonium hydroxide}
C22B15/0078 (With ammoniacal solutions) appears on 61 US grants and 39 published applications in this corpus.
Search patents in C22B- Granted patents
- 61
- Published applications
- 39
- Assignees
- 48
- Inventors
- 132
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 4 |
| 2014 | 2 | 3 |
| 2015 | 3 | 2 |
| 2016 | 3 | 8 |
| 2017 | 0 | 1 |
| 2018 | 3 | 2 |
| 2019 | 3 | 1 |
| 2020 | 3 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 4 |
| 2025 | 0 | 5 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Integrated recovery of metals from complex substrates22 Sep 2026US 12,742,224 B2Yava International Inc.
- 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
- Ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper31 Mar 2026US 12,590,352 B2GreenNovo Environmental Technology Co., Ltd
- Flotation reagents and flotation processes utilizing same18 May 2021US 11,007,538 B2Cytec Technology Corp.
- Method for reproducing valuable metal11 Jun 2026US 2026/0159410 A1Prime Planet Energy & Solutions, Inc.
- Method for reproducing valuable metal11 Jun 2026US 2026/0163096 A1Prime Planet Energy & Solutions, Inc.
- Extraction of copper and other elements from waste materials for the production of metalic copper12 Feb 2026US 2026/0043113 A1University of Kentucky Research Foundation
- Carbonation and selective leaching for the recovery of metals14 Aug 2025US 2025/0257423 A1Phoenix Tailings, Inc.
- Principles of operation and control of oxidizer in countercurrent leaching configurations29 May 2025US 2025/0171874 A1University of Kentucky Research Foundation
Most cited
By later US patents
- Recovery of precious metals from metal sulphides66US 4,070,182 ASherritt Gordon Mines Limited · 1978
- Recovery of copper from its sulfides and other sources using halogen reagents and oxidants31US 5,989,311 ASouth Dakota School of Mines and Technology · 1999
- Composition and process for the solvent extraction of metals using aldoxime or ketoxime extractants26US 6,733,688 B1Cytec Technology Corp. · 2004
- Process for the recovery of copper and ammonium sulphate from copper-bearing mineral sulphide ores or concentrates24US 3,985,553 ASherritt Gordon Mines Limited · 1976
- Copper recovery process20US 5,908,605 AHenkel Corporation · 1999