C22B 15/0013
By roasting
Official title: {by roasting}
C22B15/0013 (By roasting) appears on 46 US grants and 34 published applications in this corpus.
Search patents in C22B- Granted patents
- 46
- Published applications
- 34
- Assignees
- 46
- Inventors
- 157
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 2 | 3 |
| 2024 | 0 | 4 |
| 2025 | 0 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Valuable matter recovery method11 Aug 2026US 12,706,333 B2Dowa Eco-System Co., Ltd.
- Method for producing copper metal from copper concentrates without generating waste26 May 2026US 12,637,738 B2Universidad De Concepcion
- Method for recovering valuable metal7 Nov 2023US 11,807,914 B2Sumitomo Metal Mining Co., Ltd.
- Process and apparatus for roasting of metal sulfide concentrates and/or residues16 May 2023US 11,649,523 B2Metso Outotec Finland Oy
- Method of copper concentrate sulfation and leaching11 Jan 2022US 11,220,725 B2Clean Resources Pte. Ltd
- Extraction and recovery of metals under ambient conditions29 Jan 2026US 2026/0028695 A1ZincFive, LLC
- Method for recovering valuable materials from lithium ion secondary batteries20 Nov 2025US 2025/0357567 A1Dowa Eco-System Co., Ltd.
- Oxidative and reductive leaching methods2 Oct 2025US 2025/0305089 A1BASF SE
- Method for recovering valuable metals17 Apr 2025US 2025/0125433 A1Sumitomo Metal Mining Co., Ltd.
- Method for processing alloy2 Jan 2025US 2025/0003027 A1Sumitomo Metal Mining Co., Ltd.
Most cited
By later US patents
- Method for separating metal constituents from ocean floor nodules46US 4,042,664 ADeepsea Ventures, Inc. · 1977
- Recovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphates21US 4,415,540 AProvincial Holdings Ltd. · 1983
- Process for the recovery of non-ferrous metals from sulphide ores and concentrates21US 4,619,814 AProvincial Holdings Ltd. · 1986
- Flash smelting process10US 4,615,729 AInco Limited · 1986
- Leaching of copper-nickel concentrates8US 4,067,952 AAnglo-Transvaal Consolidated Investment Company Limited · 1978