C22B 1/11
Removing sulfur, phosphorus or arsenic other than by roasting
C22B1/11 (Removing sulfur, phosphorus or arsenic other than by roasting) appears on 54 US grants and 44 published applications in this corpus.
Search patents in C22B- Granted patents
- 54
- Published applications
- 44
- Assignees
- 54
- Inventors
- 132
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 2 |
| 2015 | 0 | 3 |
| 2016 | 2 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 5 |
| 2019 | 3 | 4 |
| 2020 | 2 | 2 |
| 2021 | 4 | 4 |
| 2022 | 4 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 6 |
| 2025 | 1 | 1 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recovery of commercial substances from apatite mineral5 May 2026US 12,617,691 B2Easymining Sweden AB
- Alkaline oxidation methods and systems for recovery of metals from ores7 Apr 2026US 12,595,529 B2Alderley Gold Corp.
- Method for removing phosphorus from phosphorus-containing substance, method for manufacturing raw material for metal smelting or raw material for metal refining, and method for manufacturing metal24 Mar 2026US 12,584,187 B2Jfe Steel Corporation
- Selective sulfidation and desulfidation25 Mar 2025US 12,258,672 B2Massachusetts Institute of Technology
- Method for recovering valuable metals from waste lithium ion batteries2 Jul 2024US 12,027,681 B2Sumitomo Metal Mining Co., Ltd.
- Antiscalant Compositions and Methods of Use6 Aug 2026US 2026/0226340 A1Locus Solutions Ipco, LLC
- Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores2 Jul 2026US 2026/0185181 A1Alderley Gold Corp.
- Method for recovering rare earth elements from rare earth raw materials including rare earth elements28 May 2026US 2026/0146304 A1Korea Institute of Geoscience and Mineral Resources
- Method for recovering valuable metals12 Mar 2026US 2026/0071294 A1Sumitomo Metal Mining Co., Ltd.
- Recovering rare earth elements8 May 2025US 2025/0146104 A1The Australian National University
Most cited
By later US patents
- Treatment of ores or metallurgical by-products containing arsenic and antimony16US 4,102,976 AMetallurgie Hoboken-Overpelt · 1978
- Production of copper and sulfur from copper-iron sulfides15US 3,964,901 ACominco Ltd. · 1976
- Direct reduction of ores and concentration of metallic values9US 4,416,688 ARaymond Kaiser Engineers Inc. · 1983
- Recovery of copper and zinc as sulfides from copper-iron sulfides8US 4,049,770 ACominco Ltd. · 1977
- Enzyme oxidation of sulfides in minerals7US 4,256,485 ANorthwest Ecological Research & Development, Inc. · 1981