C22B 5/02
Dry methods smelting of sulfides or formation of mattes
Official title: Dry methods {smelting of sulfides or formation of mattes}
C22B5/02 (Dry methods smelting of sulfides or formation of mattes) appears on 1,017 US grants and 813 published applications in this corpus.
Search patents in C22B- Granted patents
- 1,017
- Published applications
- 813
- Assignees
- 645
- Inventors
- 2,323
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 24 | 0 |
| 1978 | 26 | 0 |
| 1979 | 26 | 0 |
| 1980 | 15 | 0 |
| 1981 | 17 | 0 |
| 1982 | 11 | 0 |
| 1983 | 22 | 0 |
| 1984 | 28 | 0 |
| 1985 | 21 | 0 |
| 1986 | 27 | 0 |
| 1987 | 24 | 0 |
| 1988 | 21 | 0 |
| 1989 | 16 | 0 |
| 1990 | 17 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 20 | 0 |
| 1995 | 12 | 0 |
| 1996 | 18 | 0 |
| 1997 | 11 | 0 |
| 1998 | 10 | 0 |
| 1999 | 15 | 0 |
| 2000 | 17 | 0 |
| 2001 | 23 | 8 |
| 2002 | 32 | 25 |
| 2003 | 23 | 30 |
| 2004 | 19 | 30 |
| 2005 | 16 | 20 |
| 2006 | 11 | 49 |
| 2007 | 5 | 26 |
| 2008 | 13 | 31 |
| 2009 | 24 | 47 |
| 2010 | 40 | 50 |
| 2011 | 30 | 39 |
| 2012 | 32 | 28 |
| 2013 | 31 | 18 |
| 2014 | 23 | 16 |
| 2015 | 21 | 24 |
| 2016 | 18 | 19 |
| 2017 | 18 | 20 |
| 2018 | 22 | 29 |
| 2019 | 21 | 25 |
| 2020 | 13 | 13 |
| 2021 | 19 | 18 |
| 2022 | 13 | 36 |
| 2023 | 16 | 47 |
| 2024 | 17 | 65 |
| 2025 | 36 | 52 |
| 2026 | 17 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C22B 5/12By gases343
- C22B 5/10By solid carbonaceous reducing agents287
- C22B 5/04By aluminium, other metals or silicon245
- C22B 5/16With volatilisation or condensation of the metal being produced120
- C22B 5/18Reducing step-by-step36
- C22B 5/06By carbides or the like28
- C22B 5/20From metal carbonyls18
- C22B 5/08By sulfides11
Recent patents
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- Method for antimony recovery and synergistic fluorine fixation from low-grade complex antimony oxide resources1 Oct 2026US 2026/0297704 A1Kunming University of Science and Technology
- Rhenium Remediation in the Preparation of Molybdenum-9924 Sep 2026US 2026/0286468 A1Output Enablers LLC, d/b/a Calchemist
- Methods for reducing metal oxides with ammonia gas10 Sep 2026US 2026/0265846 A1Trustees of Tufts College
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
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Most cited
By later US patents
- Cryoplasty device and method384US 5,868,735 ASciMed Life Systems, Inc. · 1999
- Cryoplasty device and method227US 6,290,696 B1SciMed Life Systems, Inc. · 2001
- Cryoplasty device and method182US 6,648,878 B2SciMed Life Systems, Inc. · 2003
- Cryoplasty device and method170US 7,022,120 B2SciMed Life Systems, Inc. · 2006
- Method for indirect chemical reduction of metals in waste154US 5,322,547 AMolten Metal Technology, Inc. · 1994