C22B 15/006
Working up of molten copper
Official title: {working up of molten copper, e.g. refining}
C22B15/006 (Working up of molten copper) appears on 119 US grants and 61 published applications in this corpus.
Search patents in C22B- Granted patents
- 119
- Published applications
- 61
- Assignees
- 76
- Inventors
- 289
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 10 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 0 |
| 2003 | 3 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 3 | 3 |
| 2010 | 0 | 8 |
| 2011 | 2 | 2 |
| 2012 | 7 | 6 |
| 2013 | 0 | 1 |
| 2014 | 5 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 0 | 4 |
| 2018 | 2 | 4 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 4 | 7 |
| 2024 | 1 | 1 |
| 2025 | 2 | 2 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas injection device7 Jul 2026US 12,674,224 B2SMS group GmbH
- Method for producing copper metal from copper concentrates without generating waste26 May 2026US 12,637,738 B2Universidad De Concepcion
- Method for the recovery of metals from electronic waste10 Mar 2026US 12,571,069 B2SMS group GmbH
- Apparatus and method for production of high purity copper-based alloys29 Jul 2025US 12,371,760 B2Doggone Investment Co. LLC
- Apparatus and method for production of high purity copper-based alloys25 Feb 2025US 12,234,531 B2Doggone Investment Co. LLC
- Gas injection device8 Oct 2026US 2026/0308714 A1SMS group GmbH
- Method and apparatus for producing oxygen-free copper or oxygen-free copper alloy27 Aug 2026US 2026/0249347 A1Ls Cable & System Ltd.
- 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.
- Apparatus and method for production of high purity copper-based alloys21 May 2026US 2026/0139346 A1Doggone Investment Co. LLC
Most cited
By later US patents
- Submerged combustion in molten materials69US 4,657,586 AUnion Carbide Corporation · 1987
- 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
- Vacuum purification of liquid metals17US 4,456,479 A1984
- Method for the thermal refinement of greatly contaminated copper in molten phase14US 4,073,646 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1978
- Method and apparatus for simultaneously separating volatile and non-volatile metals13US 4,606,760 AFritz Enterprises, Inc. · 1986