C22B 21/0007
Preliminary treatment of ores or scrap or any other metal source
Official title: {Preliminary treatment of ores or scrap or any other metal source (Bayer processes C01F)}
C22B21/0007 (Preliminary treatment of ores or scrap or any other metal source) appears on 125 US grants and 109 published applications in this corpus.
Search patents in C22B- Granted patents
- 125
- Published applications
- 109
- Assignees
- 121
- Inventors
- 405
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 3 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 3 | 3 |
| 2016 | 2 | 10 |
| 2017 | 3 | 2 |
| 2018 | 2 | 4 |
| 2019 | 3 | 5 |
| 2020 | 7 | 5 |
| 2021 | 1 | 7 |
| 2022 | 1 | 8 |
| 2023 | 7 | 2 |
| 2024 | 6 | 20 |
| 2025 | 3 | 14 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Processing methods and processing apparatus11 Aug 2026US 12,703,895 B2Altek Europe Limited
- Articles and methods for processing scrap aluminum4 Aug 2026US 12,698,545 B2Massachusetts Institute of Technology
- Method and system for processing aluminum alloy rims using rim serial numbers16 Jun 2026US 12,657,549 B2House of Metals Company Limited
- Process for producing high purity aluminum materials31 Mar 2026US 12,590,008 B2HiurA Pty Ltd
- Processing methods and processing apparatus26 Aug 2025US 12,398,442 B2Altek Europe Limited
- Production of high purity alumina and/or smelter-grade alumina3 Sep 2026US 2026/0257933 A1Andromeda Technologies Holdings Pty Ltd
- Separation liquid and method for recovery of metal-inorganic composite electrode assembly13 Aug 2026US 2026/0233271 A1Rikomay Recycling Singapore Pte. Ltd.
- Process for producing high purity aluminium materials13 Aug 2026US 2026/0234015 A1HiPurA Pty Ltd
- A method for the preparation of alumina13 Aug 2026US 2026/0234017 A1Playa One Pty Ltd
- Calcination Apparatus and Process23 Jul 2026US 2026/0209059 A1Rio Tinto Alcan International Limited
Most cited
By later US patents
- Recovery of aluminum and other metal values from fly ash24US 4,252,777 AThe United States of America as represented by the United States Department of Energy · 1981
- Method and apparatus for recycling empty aluminum cans24US 5,769,331 ANippon Chuzo Kabushiki Kaisha · 1998
- Processes for extracting aluminum and iron from aluminous ores23US 7,837,961 B2Exploration Orbite VSPA Inc. · 2010
- Processes for extracting aluminum and iron from aluminous ores22US 8,241,594 B2Orbite Aluminae Inc. · 2012
- Aluminum dross recovery process17US 5,102,453 A1992