C22B 21/04
Obtaining aluminium: with alkali metals earth alkali metals included
Official title: with alkali metals {earth alkali metals included}
C22B21/04 (Obtaining aluminium: with alkali metals earth alkali metals included) appears on 22 US grants and 23 published applications in this corpus.
Search patents in C22B- Granted patents
- 22
- Published applications
- 23
- Assignees
- 24
- Inventors
- 73
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 3 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 6 |
| 2025 | 2 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metal removal method and metal recovery method30 Jun 2026US 12,668,855 B2Kabushiki Kaisha Toyota Chuo Kenkyusho
- Method for the high efficiency recycling of iron phosphate black powder slag25 Nov 2025US 12,479,726 B2
- Process and system for lithium production25 Nov 2025US 12,479,738 B2Icsip Pty Ltd
- Method for obtaining calcium aluminates from non-saline aluminum slags8 Dec 2020US 10,858,261 B2Arzyz, S.A. De C.V.
- System and method for adding molten lithium to a molten aluminium melt5 Nov 2019US 10,465,263 B2Aleris Rolled Products Germany GmbH
- Production of high purity alumina and/or smelter-grade alumina3 Sep 2026US 2026/0257933 A1Andromeda Technologies Holdings Pty Ltd
- Process and system for lithium production12 Mar 2026US 2026/0070800 A1Icsip Pty Ltd
- Process and system for lithium production22 Jan 2026US 2026/0022023 A1Icsip Pty Ltd
- Process and system for lithium production15 Jan 2026US 2026/0015247 A1Icsip Pty Ltd
- Method for metal production28 Aug 2025US 2025/0270671 A1Bradford Metallurgy Ltd
Most cited
By later US patents
- Continuous titanium process23US 4,401,467 A1983
- Aluminum scrap recovery by inductively moving molten metal15US 5,032,171 AAluminum Company of America · 1991
- Injection apparatus for introduction of a fluid material into a molten metal bath and associated method4US 4,767,598 AAluminum Company of America · 1988
- Process for production of aluminum by carbothermic production of an alkaline earth metal aluminide such as calcium aluminide and recycling of reactant byproducts4US 4,769,067 AAluminum Company of America · 1988
- Process for carbothermic production of alkaline earth metal aluminide and recovery of same4US 4,812,168 AAluminum Company of America · 1989