C22B 9/05
Refining by treating with gases
Official title: Refining by treating with gases, e.g. gas flushing {also refining by means of a material generating gas in situ}
C22B9/05 (Refining by treating with gases) appears on 377 US grants and 218 published applications in this corpus.
Search patents in C22B- Granted patents
- 377
- Published applications
- 218
- Assignees
- 235
- Inventors
- 798
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 14 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 15 | 0 |
| 1984 | 9 | 0 |
| 1985 | 9 | 0 |
| 1986 | 2 | 0 |
| 1987 | 15 | 0 |
| 1988 | 13 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 13 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 8 | 7 |
| 2002 | 11 | 5 |
| 2003 | 5 | 10 |
| 2004 | 7 | 10 |
| 2005 | 6 | 9 |
| 2006 | 1 | 12 |
| 2007 | 4 | 3 |
| 2008 | 5 | 8 |
| 2009 | 11 | 4 |
| 2010 | 7 | 10 |
| 2011 | 2 | 11 |
| 2012 | 9 | 7 |
| 2013 | 3 | 5 |
| 2014 | 8 | 11 |
| 2015 | 4 | 6 |
| 2016 | 11 | 6 |
| 2017 | 8 | 6 |
| 2018 | 3 | 7 |
| 2019 | 10 | 11 |
| 2020 | 5 | 4 |
| 2021 | 1 | 2 |
| 2022 | 3 | 6 |
| 2023 | 2 | 13 |
| 2024 | 7 | 21 |
| 2025 | 10 | 12 |
| 2026 | 7 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Gas injection device7 Jul 2026US 12,674,224 B2SMS group GmbH
- Method and smelting unit for pyrometallurgical smelting of metal- containing raw materials, waste materials and/or secondary waste materials23 Jun 2026US 12,662,716 B2SMS group GmbH
- Method for the recovery of metals from electronic waste10 Mar 2026US 12,571,069 B2SMS group GmbH
- Gas injection device8 Oct 2026US 2026/0308714 A1SMS group GmbH
- Apparatus and method for refining liquid metal24 Sep 2026US 2026/0284739 A1Danieli & C. Officine Meccaniche SpA
- Lithium recovery method25 Jun 2026US 2026/0176718 A1Honda Motor Co., Ltd.
- Process for the oxidative pre-melting and smelting of a metalliferous feedstock material-containing agglomerate18 Jun 2026US 2026/0166509 A1African Rainbow Minerals Limited
- Method and device for preparing an oxygen-free copper pipe from recycled copper, and a corrosion-resistant copper pipe and its casting process11 Jun 2026US 2026/0159917 A1Zhejiang Copper Processing Research Institute Co., Ltd.
Most cited
By later US patents
- 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
- Gas injection apparatus139US 4,169,584 AThe Carborundum Company · 1979
- Rotary blade-type apparatus for dissolving alloy elements and dispersing gas in an aluminum bath133US 4,802,656 AAluminium Pechiney · 1989
- Metal treatment system131US 4,392,888 AAluminum Company of America · 1983