Description
Class C22B : PRODUCTION OR REFINING OF METALS
Subclass 1/11: Preliminary treatment of ores or scrap Removing sulfur, phosphorus or arsenic, other than by roasting
C22B 1/11
Sub-Class
Stats
- 20 US PATENTS IN FORCE
- 6 US APPLICATIONS PENDING
- 6 Total Patent Owners
- 91 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258672 | Selective sulfidation and desulfidation | Dec 27, 20 | Mar 25, 25 | Massachusetts Institute of Technology |
| 11993826 | Alkaline oxidation methods and systems for recovery of metals from ores | May 14, 19 | May 28, 24 | Hycroft Mining Holding Corporation |
| 11708640 | Systems and methods for aqueous recovery of lead from lead acid batteries with reduced electrolyte demand | Jun 12, 20 | Jul 25, 23 | Aqua Metals Inc. |
| 11332806 | Method and system for desulfurization and dezincification of tailings | May 15, 19 | May 17, 22 | Not available |
| 11319612 | Biotechnological procedure to remove magnetic sulfur impurities from iron concentrate ores | Aug 24, 16 | May 03, 22 | Biosigma S.A. |
| 11254707 | Peptide binding to arsenic-containing mineral and use thereof | Sep 15, 17 | Feb 22, 22 | Shibaura Institute of Technology; JX Nippon Mining & Metals Corporation; |
| 11180825 | Process for the depression of iron sulphides and other disposable elements in the concentration of mineral by flotation and electrochemical reactor | Aug 02, 17 | Nov 23, 21 | LAIN TECHNOLOGIES LTD |
| 11155894 | Method for reducing arsenic content in arsenic-bearing gold material | Apr 28, 16 | Oct 26, 21 | Eldorado Gold Corporation |
| 11149328 | Method of leaching arsenic from ore comprising copper | Nov 03, 14 | Oct 19, 21 | Colorado School of Mines |
| 11118244 | Low acidity, low solids pressure oxidative leaching of sulphidic feeds | Apr 12, 18 | Sep 14, 21 | Sherritt International Corporation |
| 10822673 | Arsenic removal from lead concentrate by ozone treatment and reverse flotation | Dec 17, 19 | Nov 03, 20 | American Air Liquide, Inc. |
| 10786819 | Cationic flotation of silica and apatite from oxidized iron ores at natural pH | Jan 20, 17 | Sep 29, 20 | Regents of the University of Minnesota |
| 10196707 | Process and reactor for arsenic fixation | Apr 12, 16 | Feb 05, 19 | Hatch Ltd. |
| 10190193 | Leaching of minerals | Oct 21, 14 | Jan 29, 19 | GLENCORE TECHNOLOGY PTY LTD |
| 10167202 | Enhanced metal recovery through oxidation in liquid and/or supercritical carbon dioxide | Jan 30, 17 | Jan 01, 19 | King Abdullah University of Science and Technology |
| 9981295 | Method for vitrification of arsenic and antimony | Jul 21, 16 | May 29, 18 | Dundee Sustainable Technologies Inc. |
| 9598748 | Method for producing ferroalloy containing nickel | Dec 20, 13 | Mar 21, 17 | OUTOTEC OYJ |
| 9546409 | Process for producing direct reduced iron (DRI) utilizing gases derived from coal | Aug 20, 11 | Jan 17, 17 | DANIELI & C. OFFICINE MECCANICHE S.P.A., HYL TECHNOLOGIES, S.A. DE C.V., |
| 9410225 | Process for recovery of copper from arsenic-bearing and/or antimony-bearing copper sulphide concentrates | May 13, 14 | Aug 09, 16 | AURUBIS AG |
| 9328397 | Removal of arsenic using a dissimilatory arsenic reductase | Apr 03, 15 | May 03, 16 | UNIWERSYTET WARSZAWSKI |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0417,822 | Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores | Apr 23, 24 | Dec 19, 24 | Alderley Gold Corp. |
| 2024/0417,827 | METHODS FOR EXTRACTING RARE EARTH ELEMENTS FROM ION-ADSORPTION CLAYS | Aug 26, 24 | Dec 19, 24 | Not available |
| 2024/0327,947 | MINERAL PROCESSING METHOD | Jun 10, 24 | Oct 03, 24 | KYUSHU UNIVERSITY - NATIONAL UNIVERSITY CORPORATION; Sumitomo Metal Mining Co. Ltd.; |
| 2024/0124,952 | METHOD FOR PRODUCING LOW-ARSENIC COPPER CONCENTRATE | Feb 25, 22 | Apr 18, 24 | Nittetsu Mining Co. Ltd. |
| 2022/0372,591 | 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 METAL | May 01, 20 | Nov 24, 22 | JFE Steel Corporation |
| 2022/0127,695 | PROCESSING ORES CONTAINING PRECIOUS METALS | Feb 05, 20 | Apr 28, 22 | Newcrest Mining Limited |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 31 Months (last 2 years Issuances)
- 31 Months (last 5 years Issuances)