C22B 1/06
Sulfating roasting
C22B1/06 (Sulfating roasting) appears on 54 US grants and 68 published applications in this corpus.
Search patents in C22B- Granted patents
- 54
- Published applications
- 68
- Assignees
- 63
- Inventors
- 229
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 0 |
| 2009 | 0 | 3 |
| 2010 | 3 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 0 | 1 |
| 2020 | 3 | 4 |
| 2021 | 2 | 8 |
| 2022 | 2 | 5 |
| 2023 | 4 | 6 |
| 2024 | 8 | 13 |
| 2025 | 7 | 4 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of purifying sodium bromide from waste circuit boards pyrolysis coke27 Jan 2026US 12,534,376 B2Beijing University of Technology
- Identifying and extracting rare earth elements from mining operations28 Oct 2025US 12,454,739 B2Georgia State University Research Foundation, Inc.
- Treatment method for laterite nickel ore by curing and roasting-water leaching-atmospheric pressure acid leaching2 Sep 2025US 12,404,567 B2Gem Co., Ltd.
- Process for metallurgy and separating rare earth concentrate using combination method26 Aug 2025US 12,398,443 B2Grirem Advanced Materials Co., Ltd.
- Aluminosilicates, related processes and uses thereof as supplementary cementing materials25 Mar 2025US 12,258,292 B2Nemaska Lithium Inc.
- Method of extracting lithium from low-clay minerals11 Jun 2026US 2026/0159915 A1Instituto Mexicano Del Petroleo
- Method for recovering lithium with high efficiency from low-grade lithium minerals through process imporvement, and lithium carbonate prepared thereby28 May 2026US 2026/0146303 A1Korea Institute of Geoscience and Mineral Resources
- Method for recovering lithium from waste lithium batteries23 Apr 2026US 2026/0109616 A1Young Poong Corporation
- Method for recovering lithium from waste primary lithium battery leachate and producing lithium chloride therefrom23 Apr 2026US 2026/0112657 A1Korea Institute of Geoscience and Mineral Resources
- A Process and System for Extracting Rare Earth Elements Using High Pulp Density Cracking29 Jan 2026US 2026/0028698 A1His Majesty the King In Right of Canada, AS Represented By the Minister of Natural Resources
Most cited
By later US patents
- Process for recovering tantalum and/or niobium compounds from composites containing a variety of metal compounds38US 5,787,332 AFansteel Inc. · 1998
- Preferential hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates25US 5,711,922 A1998
- Recovery of platinum group metals25US 7,067,090 B2South Dakota School of Mines and Technology · 2006
- Method and apparatus for removing arsenic from an arsenic-containing material19US 4,497,780 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1985
- Method and device for treating anode slime19US 7,670,575 B2Outotec Oyj · 2010