C22B 15/0028
Smelting or converting
Official title: {Smelting or converting}
C22B15/0028 (Smelting or converting) appears on 256 US grants and 151 published applications in this corpus.
Search patents in C22B- Granted patents
- 256
- Published applications
- 151
- Assignees
- 143
- Inventors
- 615
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 10 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 11 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 2 |
| 2003 | 3 | 3 |
| 2004 | 5 | 3 |
| 2005 | 4 | 2 |
| 2006 | 0 | 4 |
| 2007 | 1 | 3 |
| 2008 | 0 | 5 |
| 2009 | 4 | 6 |
| 2010 | 3 | 6 |
| 2011 | 5 | 5 |
| 2012 | 5 | 7 |
| 2013 | 2 | 5 |
| 2014 | 7 | 5 |
| 2015 | 5 | 9 |
| 2016 | 3 | 5 |
| 2017 | 6 | 6 |
| 2018 | 9 | 13 |
| 2019 | 9 | 6 |
| 2020 | 7 | 4 |
| 2021 | 0 | 8 |
| 2022 | 6 | 7 |
| 2023 | 9 | 14 |
| 2024 | 5 | 11 |
| 2025 | 5 | 6 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor and system thereof15 Sep 2026US 12,735,765 B2Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.
- Method for recovering valuable metal from used LIB11 Aug 2026US 12,703,893 B2Mitsubishi Materials Corporation
- Method for producing copper metal from copper concentrates without generating waste26 May 2026US 12,637,738 B2Universidad De Concepcion
- Mineralogical analysis system of copper concentrate3 Mar 2026US 12,566,166 B2Codelcotec SPA
- Method for co-producing blister copper by enriching germanium and indium from a copper sulfide ore7 Oct 2025US 12,435,388 B2Honghe University
- Operation method of copper smelting24 Sep 2026US 2026/0286464 A1JX Advanced Metals Corporation
- Smelting furnace arrangement24 Sep 2026US 2026/0286465 A1Metso Metals Oy
- Shaft furnace for the smelting of copper and method therefor20 Aug 2026US 2026/0242893 A1SMS group GmbH
- Flash smelting furnace, flash smelting furnace operation method, and metal smelting method13 Aug 2026US 2026/0234750 A1JX Advanced Metals Corporation
- Method and device for preparing an oxygen-free copper pipe from recycled copper, and a corrosion-resistant copper pipe and its casting process11 Jun 2026US 2026/0159917 A1Zhejiang Copper Processing Research Institute Co., Ltd.
Most cited
By later US patents
- Submerged combustion in molten materials69US 4,657,586 AUnion Carbide Corporation · 1987
- Vertical shaft melting furnace and method of melting65US 4,877,449 AInstitute of Gas Technology · 1989
- 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
- Method to protect the surface of metal in vertical melting furnaces20US 4,828,609 ALiquid Air Corporation · 1989