C22B 1/08
Chloridising roasting
C22B1/08 (Chloridising roasting) appears on 82 US grants and 53 published applications in this corpus.
Search patents in C22B- Granted patents
- 82
- Published applications
- 53
- Assignees
- 84
- Inventors
- 210
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 9 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 3 | 4 |
| 2006 | 0 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 0 |
| 2009 | 1 | 5 |
| 2010 | 4 | 1 |
| 2011 | 3 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 5 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 3 |
| 2019 | 3 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 3 | 4 |
| 2025 | 3 | 7 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sustainable method for recycling smelting works dusts and sludges to produce iron-containing, heavy-metal-depleted reclaimed materials with recovery of lead and zinc21 Oct 2025US 12,448,666 B2ThyssenKrupp Steel Europe AG
- Metal recovery process12 Aug 2025US 12,385,106 B2Minex Technology Group Limited
- Apparatus for a chlorination method to recycle metal elements in lithium batteries25 Feb 2025US 12,237,483 B1National Engineering Research Center of Advanced Energy Storage Materials (Shenzhen) Co., Ltd.
- Method for recovery of valuable metals from spent secondary batteries23 Jul 2024US 12,046,727 B2Korea Zinc Co., Ltd.
- Process for the purification of waste materials or industrial by-products comprising chlorine26 Mar 2024US 11,938,527 B2amaTEQ Holding GmbH
- Recovery of phosphorus compounds and iron compounds from iron phosphate-containing materials13 Aug 2026US 2026/0234023 A1LANXESS Deutschland GmbH
- Method for recovering lithium25 Jun 2026US 2026/0176716 A1Posco Holding Inc.
- Selective extraction and separation of vanadium and iron26 Feb 2026US 2026/0055005 A1Tcm Research Ltd.
- Comprehensive utilization method for valuable elements in hydrometallurgical slag of laterite nickel ore12 Feb 2026US 2026/0043112 A1Gem Co., Ltd.
- Recycling method for lithium in waste lithium iron phosphate battery4 Dec 2025US 2025/0369071 A1Chenzhou Hui Neng Energy Storage Materials Engineering Research Center Co., Ltd.
Most cited
By later US patents
- Process for treating metal-contaminated materials48US 5,556,447 APhysical Sciences, Inc. · 1996
- Method for separating metal constituents from ocean floor nodules46US 4,042,664 ADeepsea Ventures, Inc. · 1977
- Process for simultaneously processing of used metal and/or metal _scrap and scrap containing halogenated hydrocarbons43US 4,317,800 AEsmil B.V. · 1982
- Process for agglomerating mineral ore concentrate utilizing dispersions of polymer binders or dry polymer binders30US 4,802,914 AUnion Carbide Corporation · 1989
- Process for agglomerating ore concentrate utilizing clay and dispersions of polymer binders or dry polymer binders23US 4,767,449 AUnion Carbide Corporation · 1988