C22B 9/00
General processes of refining or remelting of metals
Official title: General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
C22B9/00 (General processes of refining or remelting of metals) appears on 1,754 US grants and 1,157 published applications in this corpus.
Search patents in C22B- Granted patents
- 1,754
- Published applications
- 1,157
- Assignees
- 976
- Inventors
- 3,978
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 47 | 0 |
| 1977 | 49 | 0 |
| 1978 | 45 | 0 |
| 1979 | 28 | 0 |
| 1980 | 36 | 0 |
| 1981 | 39 | 0 |
| 1982 | 32 | 0 |
| 1983 | 44 | 0 |
| 1984 | 49 | 0 |
| 1985 | 38 | 0 |
| 1986 | 37 | 0 |
| 1987 | 46 | 0 |
| 1988 | 51 | 0 |
| 1989 | 58 | 0 |
| 1990 | 36 | 0 |
| 1991 | 26 | 0 |
| 1992 | 34 | 0 |
| 1993 | 25 | 0 |
| 1994 | 29 | 0 |
| 1995 | 21 | 0 |
| 1996 | 16 | 0 |
| 1997 | 27 | 0 |
| 1998 | 32 | 0 |
| 1999 | 27 | 0 |
| 2000 | 38 | 0 |
| 2001 | 24 | 17 |
| 2002 | 46 | 32 |
| 2003 | 37 | 42 |
| 2004 | 27 | 41 |
| 2005 | 25 | 31 |
| 2006 | 9 | 39 |
| 2007 | 11 | 31 |
| 2008 | 18 | 54 |
| 2009 | 31 | 49 |
| 2010 | 40 | 60 |
| 2011 | 33 | 62 |
| 2012 | 56 | 57 |
| 2013 | 33 | 32 |
| 2014 | 43 | 52 |
| 2015 | 27 | 45 |
| 2016 | 41 | 53 |
| 2017 | 38 | 42 |
| 2018 | 38 | 40 |
| 2019 | 41 | 38 |
| 2020 | 32 | 40 |
| 2021 | 28 | 35 |
| 2022 | 27 | 50 |
| 2023 | 30 | 56 |
| 2024 | 42 | 73 |
| 2025 | 40 | 47 |
| 2026 | 27 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C22B 9/16Remelting metals527
- C22B 9/02Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic407
- C22B 9/05Refining by treating with gases377
- C22B 9/10General processes of refining or remelting of metals: with refining or fluxing298
- C22B 9/04Refining by applying a vacuum181
- C22B 9/003General processes of refining or remelting of metals: by induction99
- C22B 9/006General processes of refining or remelting of metals: with use of an90
- C22B 9/14Refining in the solid state45
Recent patents
- Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor and system thereof15 Sep 2026US 12,735,765 B2Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.
- Process for processing hard metal15 Sep 2026US 12,735,766 B2Betek GmbH & Co. KG
- Method for recovering valuable substance15 Sep 2026US 12,735,767 B2Dowa Eco-System Co., Ltd.
- Remelting plant for metals, and method for remelting metals8 Sep 2026US 12,729,415 B2ALD Vacuum Technologies GmbH
- Processing method for electronic/electric device component waste25 Aug 2026US 12,715,026 B2JX Advanced Metals Corporation
- Gas injection device8 Oct 2026US 2026/0308714 A1SMS group GmbH
- Apparatus and method for fractionating alloy components in recycled alloy8 Oct 2026US 2026/0308715 A1Hyundai Motor Company
- Apparatus and method for refining liquid metal24 Sep 2026US 2026/0284739 A1Danieli & C. Officine Meccaniche SpA
- Recycling facility and recycling method for magnesium alloy17 Sep 2026US 2026/0275452 A1The Japan Steel Works, Ltd.
- Al-si alloy for casting, al-si alloy casting and method for producing al-si alloy casting3 Sep 2026US 2026/0258528 A1Nikkei Mc Aluminium Co., Ltd.
Most cited
By later US patents
- Magnetoplasmadynamic apparatus and process for the separation and deposition of materials173US 4,471,003 A1984
- Apparatus for the production or refining of metals, and related processes164US 7,381,366 B2General Electric Company · 2008
- Aluminum scrap reclamation148US 4,128,415 AAluminum Company of America · 1978
- Treatment of molten light metals and apparatus146US 4,931,091 AAlcan International Limited · 1990
- Method for dispersing gas into a molten metal140US 3,972,709 ASouthwire Company · 1976