C22B 23/025
With formation of a matte or by matte refining or converting into
Official title: {with formation of a matte or by matte refining or converting into nickel or cobalt, e.g. by the Oxford process (leaching of mattes C22B23/04)}
C22B23/025 (With formation of a matte or by matte refining or converting into) appears on 58 US grants and 20 published applications in this corpus.
Search patents in C22B- Granted patents
- 58
- Published applications
- 20
- Assignees
- 41
- Inventors
- 130
- Latest grant
- 9 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 4 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for producing battery-grade nickel sulfate by using laterite nickel ore9 Apr 2024US 11,952,288 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Processing of laterite ores29 Mar 2022US 11,286,541 B2Anglo American Technical & Sustainabilty Services, Ltd.
- Treatment of complex sulfide concentrate10 Dec 2019US 10,501,824 B2Outotec (Finland) Oy
- Method for producing matte or crude metal in a suspension smelting furnace and suspension smelting furnace27 Mar 2018US 9,926,617 B2Outotec (Finland) Oy
- Method and apparatus for acid granulation of matte3 Oct 2017US 9,777,345 B2Outotec (Finland) Oy
- Method for recovery of metals and metal alloys from waste lithium-ion batteries4 Jan 2024US 2024/0002978 A1The Director General, Centre for Materials for Electronics Technology (C-Met)
- Lithium-rich compositions21 Dec 2023US 2023/0411722 A1Redwood Materials, Inc.
- Method for producing battery-grade nickel sulfate by using laterite nickel ore20 Jul 2023US 2023/0227326 A1Guangdong Brunp Recycling Technology Co., Ltd.
- Method for recovering valuable metal18 May 2023US 2023/0151453 A1Sumitomo Metal Mining Co., Ltd.
- Method of reducing carbon emissions and improving the environmental performance of concentrate producers and smelters23 Feb 2023US 2023/0058608 A1World Resources Company
Most cited
By later US patents
- Method for feeding and directing reaction gas and solids into a smelting furnace and a multiadjustable burner designed for said purpose23US 6,238,457 B1Outokumpu Oyj · 2001
- Selective recovery of base metals and precious metals from ores21US 4,442,072 AThe United States of America as represented by the Secretary of the Interior · 1984
- Process for recovering platinum group metals from material containing base metals20US 7,033,480 B2Placer Dome Technical Services Limited · 2006
- Continuous process for copper smelting and converting in a single furnace by oxygen injection15US 4,470,845 ANewmont Mining Corporation · 1984
- Process for autogenous oxygen smelting of sulfide materials containing base metals14US 4,415,356 AInco Limited · 1983