C01B 17/52
By roasting sulfides
Official title: by roasting sulfides (preliminary treatment of ores or scrap C22B1/00)
C01B17/52 (By roasting sulfides) appears on 8 US grants and 4 published applications in this corpus.
Search patents in C01B- Granted patents
- 8
- Published applications
- 4
- Assignees
- 9
- Inventors
- 28
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing copper metal from copper concentrates without generating waste26 May 2026US 12,637,738 B2Universidad De Concepcion
- Sulfide oxidation process for production of molybdenum oxides from molybdenite17 Nov 2015US 9,187,340 B2Orchard Material Technology, LLC
- Process for producing hydrogen, sulfur and sulfur dioxide from hydrogen sulfide-containing gas streams22 Oct 2013US 8,562,928 B2Shell Oil Company
- Process for reducing selenium and mercury from aqueous solutions8 May 2001US 6,228,270 B1Noranda Inc.
- Method for reducing sulfate formation during regeneration of hot-gas desulfurization sorbents20 Sep 1994US 5,348,921 AThe United States of America as represented by the United States Department of Energy
- Method for processing zinc concentrates5 Jun 2025US 2025/0179611 A1Glencore Technology Pty Limited
- Method for producing copper metal from copper concentrates without generating waste15 Dec 2022US 2022/0396851 A1Universidad De Concepcion
- Sulfide oxidation process for production of molybdenum oxides from molybdenite12 Jun 2014US 2014/0161715 A1Orchard Material Technology, LLC
- Process for producing hydrogen, sulfur and sulfur dioxide from hydrogen sulfide-containing gas streams21 Mar 2013US 2013/0071314 A1Shell Oil Company
Most cited
By later US patents
- Process for producing hydrogen, sulfur and sulfur dioxide from hydrogen sulfide-containing gas streams15US 8,562,928 B2Shell Oil Company · 2013
- Desulfurization of phosphogypsum14US 4,503,018 ADavy McKee Aktiengesellschaft · 1985
- Method for purifying high-temperature reducing gas8US 4,994,257 AMitsubishi Jukogyo Kabushiki Kaisha · 1991
- Method for reducing sulfate formation during regeneration of hot-gas desulfurization sorbents3US 5,348,921 AThe United States of America as represented by the United States Department of Energy · 1994
- Process for reducing selenium and mercury from aqueous solutions2US 6,228,270 B1Noranda Inc. · 2001