C22B 15/0076
Cyanide groups
Official title: {Cyanide groups}
C22B15/0076 (Cyanide groups) appears on 19 US grants and 21 published applications in this corpus.
Search patents in C22B- Granted patents
- 19
- Published applications
- 21
- Assignees
- 17
- Inventors
- 45
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 4 |
| 2009 | 3 | 1 |
| 2010 | 0 | 1 |
| 2011 | 2 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alkaline oxidation methods and systems for recovery of metals from ores7 Apr 2026US 12,595,529 B2Alderley Gold Corp.
- Alkaline oxidation methods and systems for recovery of metals from ores28 May 2024US 11,993,826 B2Hycroft Mining Holding Corporation
- Metal recovery method using adsorbent18 Oct 2022US 11,473,169 B2Danam-Ene Co. Ltd.
- Low acidity, low solids pressure oxidative leaching of sulphidic feeds14 Sep 2021US 11,118,244 B2Sherritt International Corporation
- Method of recovering base metals from low grade ores and residues28 Jul 2020US 10,724,117 B2Sirch Group (Pty) Ltd.
- Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores2 Jul 2026US 2026/0185181 A1Alderley Gold Corp.
- Method of converting copper cyanide to copper oxide and system thereof11 Jun 2026US 2026/0159409 A1Cyanco Corporation
- Method of converting copper cyanide to copper oxide and system thereof20 Feb 2025US 2025/0059058 A1Cyanco Corporation
- Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores19 Dec 2024US 2024/0417822 A1Alderley Gold Corp.
- Method of converting copper cyanide to copper oxide and system thereof6 Jul 2023US 2023/0212022 A1Cyanco Corporation
Most cited
By later US patents
- Hydrometallurgical extraction process12US 5,411,575 AE. I. Du Pont de Nemours and Company · 1995
- Precious metal recovery using thiocyanate lixiviant12US 7,285,256 B2Newmont USA Limited · 2007
- Process of recovering copper and of optionally recovering silver and gold by a leaching of oxide- and sulfide-containing materials with water-soluble cyanides11US 4,587,110 AMNR Reprossesing, Inc. · 1986
- Leach aid for metal recovery10US 10,344,353 B2Ecolab USA Inc. · 2019
- Precious metal recovery using thiocyanate lixiviant7US 7,537,640 B2Newmont USA Limited · 2009