C22B 5/00
General methods of reducing to metals
C22B5/00 (General methods of reducing to metals) appears on 1,114 US grants and 913 published applications in this corpus.
Search patents in C22B- Granted patents
- 1,114
- Published applications
- 913
- Assignees
- 711
- Inventors
- 2,537
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 36 | 0 |
| 1977 | 30 | 0 |
| 1978 | 30 | 0 |
| 1979 | 27 | 0 |
| 1980 | 16 | 0 |
| 1981 | 17 | 0 |
| 1982 | 11 | 0 |
| 1983 | 22 | 0 |
| 1984 | 28 | 0 |
| 1985 | 21 | 0 |
| 1986 | 27 | 0 |
| 1987 | 24 | 0 |
| 1988 | 22 | 0 |
| 1989 | 17 | 0 |
| 1990 | 17 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 20 | 0 |
| 1995 | 12 | 0 |
| 1996 | 19 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 16 | 0 |
| 2000 | 22 | 0 |
| 2001 | 25 | 8 |
| 2002 | 32 | 27 |
| 2003 | 27 | 32 |
| 2004 | 20 | 33 |
| 2005 | 19 | 26 |
| 2006 | 12 | 54 |
| 2007 | 7 | 30 |
| 2008 | 16 | 38 |
| 2009 | 28 | 49 |
| 2010 | 43 | 59 |
| 2011 | 34 | 43 |
| 2012 | 35 | 33 |
| 2013 | 35 | 26 |
| 2014 | 25 | 19 |
| 2015 | 27 | 28 |
| 2016 | 26 | 22 |
| 2017 | 19 | 21 |
| 2018 | 24 | 32 |
| 2019 | 22 | 28 |
| 2020 | 14 | 15 |
| 2021 | 20 | 21 |
| 2022 | 14 | 39 |
| 2023 | 19 | 52 |
| 2024 | 21 | 73 |
| 2025 | 39 | 56 |
| 2026 | 18 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of carbothermic process of magnesium production and co-production of calcium carbide6 Oct 2026US 12,753,464 B2Zhengzhou University
- Circular carbon process29 Sep 2026US 12,747,159 B2BASF SE
- Method for recovering active metals from lithium secondary battery22 Sep 2026US 12,744,262 B2SK Innovation Co., Ltd.
- Method for recovering valuable metal from used LIB11 Aug 2026US 12,703,893 B2Mitsubishi Materials Corporation
- Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production9 Jun 2026US 12,649,959 B2Carbon Technology Holdings, LLC
- 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
- Systems and methods for combined co2 storage and metal extraction from ultramafic rock and mine tailings10 Sep 2026US 2026/0265864 A1The Trustees of Columbia University in the City of New York
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
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