C22B 15/003
Bath smelting or converting
Official title: {Bath smelting or converting}
C22B15/003 (Bath smelting or converting) appears on 137 US grants and 50 published applications in this corpus.
Search patents in C22B- Granted patents
- 137
- Published applications
- 50
- Assignees
- 81
- Inventors
- 332
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 2 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 4 | 3 |
| 2015 | 1 | 2 |
| 2016 | 0 | 0 |
| 2017 | 2 | 3 |
| 2018 | 0 | 7 |
| 2019 | 5 | 2 |
| 2020 | 4 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 5 | 7 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mineralogical analysis system of copper concentrate3 Mar 2026US 12,566,166 B2Codelcotec SPA
- Operation method of copper smelting furnace25 Feb 2025US 12,234,528 B2Jx Metals Smelting Co., Ltd.
- Copper production process29 Aug 2023US 11,739,394 B2Metallo Belgium
- Furnace controller and method of operating a furnace29 Aug 2023US 11,740,022 B2Air Products and Chemicals, Inc.
- Method for recovering metals from secondary materials and other materials comprising organic constituents15 Aug 2023US 11,725,256 B2Aurubis AG
- Shaft furnace for the smelting of copper and method therefor20 Aug 2026US 2026/0242893 A1SMS group GmbH
- 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.
- Treatment of zinc leach residue13 Mar 2025US 2025/0084503 A1Glencore Technology Pty Limited
- Geothermally powered pyrometallurgical copper production27 Feb 2025US 2025/0066873 A1EnhancedGEO Holdings, LLC
- Method for recovering lithium and method for producing lithium carbonate21 Sep 2023US 2023/0295770 A1Kanto Denka Kogyo 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 to protect the surface of metal in vertical melting furnaces20US 4,828,609 ALiquid Air Corporation · 1989
- Enhanced phase interaction at the interface of molten slag and blister copper, and an apparatus for promoting same19US 6,231,641 B1Kennecott Utah Copper Corporation · 2001
- Method of producing blister copper13US 4,144,055 ABoliden Aktiebolag · 1979