C22B 7/004
Separating two or more metals by melting out , i.e. heating above
Official title: {separating two or more metals by melting out (liquation), i.e. heating above the temperature of the lower melting metal component(s); by fractional crystallisation (controlled freezing)}
C22B7/004 (Separating two or more metals by melting out , i.e. heating above) appears on 75 US grants and 71 published applications in this corpus.
Search patents in C22B- Granted patents
- 75
- Published applications
- 71
- Assignees
- 81
- Inventors
- 242
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 5 |
| 2003 | 4 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 2 | 2 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 2 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 3 |
| 2018 | 0 | 1 |
| 2019 | 4 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 3 |
| 2022 | 1 | 5 |
| 2023 | 2 | 6 |
| 2024 | 5 | 12 |
| 2025 | 5 | 12 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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- Dezincing method and dezincing apparatus18 Dec 2025US 2025/0382681 A1Jfe Steel Corporation
Most cited
By later US patents
- Device and method for obtaining non-ferrous metals86US 8,480,950 B2Pyrotek, Inc. · 2013
- Continuous method for reclaiming, melting and casting aluminum scrap17US 4,498,523 AAluminum Company of America · 1985
- Thermal reclamation method for the recovery of metals from air bag inflators16US 5,294,244 ATRW Vehicle Safety Systems Inc. · 1994
- Dross compression apparatus and method utilizing ribs on collector and head15US 5,669,957 AAltek International, Inc. · 1997
- Cooling system for press head13US 5,811,056 A1998