C22B 9/006
General processes of refining or remelting of metals: with use of an
Official title: {with use of an inert protective material including the use of an inert gas}
C22B9/006 (General processes of refining or remelting of metals: with use of an) appears on 90 US grants and 81 published applications in this corpus.
Search patents in C22B- Granted patents
- 90
- Published applications
- 81
- Assignees
- 85
- Inventors
- 276
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 4 |
| 2002 | 3 | 3 |
| 2003 | 6 | 6 |
| 2004 | 4 | 2 |
| 2005 | 4 | 2 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 9 |
| 2009 | 2 | 6 |
| 2010 | 5 | 4 |
| 2011 | 0 | 1 |
| 2012 | 2 | 5 |
| 2013 | 3 | 2 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 4 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 4 | 2 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 5 |
| 2024 | 4 | 6 |
| 2025 | 1 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recycling method for heavy rare earth element and recycling method for rare earth magnet14 Apr 2026US 12,601,033 B2Shin-Etsu Chemical Co., Ltd.
- Systems and methods for recovery of molten metal3 Feb 2026US 12,540,413 B2Phoenix Tailings, Inc.
- Process for magnesium metal extraction from mineral sources30 Dec 2025US 12,509,747 B2Magnesium Innovations Group Inc.
- System for salt removal from uranium metal31 Dec 2024US 12,180,562 B2U. S. Department of Energy
- Melting furnace purge system and method3 Dec 2024US 12,158,306 B2Fives North American Combustion, Inc.
- Systems and methods for recovery of molten metal7 May 2026US 2026/0125814 A1Phoenix Tailings, Inc.
- Process for magnesium metal extraction from mineral sources9 Apr 2026US 2026/0098322 A1Magnesium Innovations Group Inc.
- Process for magnesium metal extraction from mineral sources26 Jun 2025US 2025/0207221 A1Magnesium Innovations Group Inc.
- Systems and methods for recovery of molten metal6 Mar 2025US 2025/0075358 A1Phoenix Tailings, Inc.
- Melting furnace purge system and method13 Feb 2025US 2025/0052501 A1Fives North American Combustion, Inc.
Most cited
By later US patents
- Method for deoxidizing tantalum material93US 4,722,756 ACabot Corporation · 1988
- Method and apparatus for inert gas blanketing of a reactor or vessel used to process materials at elevated temperatures such as an induction furnace used to remelt metals for casting29US 5,518,221 AAir Products and Chemicals, Inc. · 1996
- Method to protect the surface of metal in vertical melting furnaces20US 4,828,609 ALiquid Air Corporation · 1989
- Blanketing molten nonferrous metals and alloys with gases having reduced global warming potential18US 6,398,844 B1Air Products and Chemicals, Inc. · 2002
- Apparatus and method for treating containerized feed materials in a liquid reactant metal15US 6,669,755 B2Clean Technologies International Corporation · 2003