C22B 21/0084
Melting and handling molten aluminium
Official title: {melting and handling molten aluminium (C22B21/02, C22B21/04 and C22B21/06 take precedence)}
C22B21/0084 (Melting and handling molten aluminium) appears on 309 US grants and 244 published applications in this corpus.
Search patents in C22B- Granted patents
- 309
- Published applications
- 244
- Assignees
- 196
- Inventors
- 612
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 3 |
| 2002 | 6 | 6 |
| 2003 | 10 | 13 |
| 2004 | 6 | 12 |
| 2005 | 6 | 3 |
| 2006 | 4 | 8 |
| 2007 | 5 | 7 |
| 2008 | 4 | 10 |
| 2009 | 5 | 9 |
| 2010 | 10 | 6 |
| 2011 | 5 | 11 |
| 2012 | 7 | 3 |
| 2013 | 5 | 13 |
| 2014 | 6 | 7 |
| 2015 | 7 | 12 |
| 2016 | 8 | 11 |
| 2017 | 4 | 8 |
| 2018 | 12 | 8 |
| 2019 | 8 | 3 |
| 2020 | 11 | 12 |
| 2021 | 8 | 5 |
| 2022 | 4 | 12 |
| 2023 | 4 | 19 |
| 2024 | 6 | 17 |
| 2025 | 6 | 18 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for recovering lithium and method for processing lithium ion secondary battery22 Sep 2026US 12,744,261 B2Dowa Eco-System Co., Ltd.
- Method for recovering valuable substance15 Sep 2026US 12,735,767 B2Dowa Eco-System Co., Ltd.
- Converting intermittent solar and wind produced electricity to 24/7 grid electricity via on-demand aluminum energy storage and its conversion back to economically competitive 24/7 local grid electricity1 Sep 2026US 12,723,541 B1
- Method for recovering valuable substance25 Aug 2026US 12,716,112 B2Dowa Eco-System Co., Ltd.
- Valuable matter recovery method11 Aug 2026US 12,706,333 B2Dowa Eco-System Co., Ltd.
- Method for preparing a metal alloy8 Oct 2026US 2026/0308718 A1Constellium Muscle Shoals LLC
- Scrap submergence device and related processes1 Oct 2026US 2026/0298542 A1Novelis Inc.
- Production method for baseball bats based on 6-series recycled aluminum25 Jun 2026US 2026/0176715 A1Zhongshan Arthur Melody Co., Ltd.
- Valuable metal production method9 Apr 2026US 2026/0100433 A1Sumitomo Metal Mining Co., Ltd.
- Method for metal recycling and regeneration production traceability with carbon disclosure26 Mar 2026US 2026/0087503 A1HF investment Ltd.
Most cited
By later US patents
- Metal scrap melting system150US 3,997,336 AAluminum Company of America · 1976
- Aluminum scrap reclamation148US 4,128,415 AAluminum Company of America · 1978
- Method for submerging entraining, melting and circulating metal charge in molten media136US 4,322,245 A1982
- Melting metal particles and dispersing gas with vaned impeller135US 5,143,357 AThe Carborundum Company · 1992
- Metal scrap submergence system128US 6,217,823 B1Metaullics Systems Co., L.P. · 2001