C22B 15/0017
Sulfating or sulfiding roasting
Official title: {Sulfating or sulfiding roasting}
C22B15/0017 (Sulfating or sulfiding roasting) appears on 15 US grants and 6 published applications in this corpus.
Search patents in C22B- Granted patents
- 15
- Published applications
- 6
- Assignees
- 10
- Inventors
- 35
- Latest grant
- 11 Jan 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of copper concentrate sulfation and leaching11 Jan 2022US 11,220,725 B2Clean Resources Pte. Ltd
- Oxygen injection in fluid bed ore concentrate roasting18 Aug 2020US 10,745,777 B2Praxair Technology, Inc.
- Sulfidization of sulfide ores for hydrometallurgical extraction of copper and other metals15 Jul 2003US 6,592,644 B2
- Process of recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals21 Jan 1992US 5,082,638 A
- Process for the recovery of non-ferrous metals from sulphide ores and concentrates28 Oct 1986US 4,619,814 AProvincial Holdings Ltd.
- Recovery method for valuable metals in copper anode slime29 Aug 2024US 2024/0287644 A1Kunming University of Science and Technology
- Oxygen injection in fluid bed ore concentrate roasting18 Apr 2019US 2019/0112687 A1Praxair Technology, Inc.
- Method of copper concentrate sulfation and leaching20 Dec 2018US 2018/0363099 A1Metoxs Pte. Ltd
- Method for obtaining copper from cupriferous arsenosulphide and/or antimony sulphide ores or ore concentrates25 Mar 2010US 2010/0071510 A1
- Method for obtaining copper and precious metals from copper-iron sulphide ores or ore concentrates4 Feb 2010US 2010/0024601 A1
Most cited
By later US patents
- 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
- Leaching of copper-nickel concentrates8US 4,067,952 AAnglo-Transvaal Consolidated Investment Company Limited · 1978
- Recovery of non-ferrous metals by thermal treatments of solutions containing non-ferrous and iron sulphates8US 4,317,803 AProvincial Holdings Ltd. · 1982
- Method for separating and recovering nickel and copper from complex materials8US 4,585,477 ABoliden Aktiebolag · 1986