Method for selective extraction of gold by niacin
US-2024018624-A1 · Jan 18, 2024 · US
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by sulfides; Roasting reaction methods
by sulfides; Roasting reaction methods · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C22B5/08 |
| Official title | by sulfides; Roasting reaction methods |
| Display label | by sulfides; Roasting reaction methods |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 4 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treatment of complex sulfide concentrate
US-10501824-B2 · Dec 10, 2019 · US
Method for refining sulfidic copper concentrate
US-10435769-B2 · Oct 8, 2019 · US
Method of converting copper containing material
US-10428404-B2 · Oct 1, 2019 · US
Method for refining sulfidic copper concentrate
US-2019144970-A1 · May 16, 2019 · US
Treatment of complex sulfide concentrate
US-2018298467-A1 · Oct 18, 2018 · US
Method for recovering target materials from source materials
US-2018223391-A1 · Aug 9, 2018 · US
Method for producing matte or crude metal in a suspension smelting furnace and suspension smelting furnace
US-9926617-B2 · Mar 27, 2018 · US
Method of converting copper containing material
US-2017058380-A1 · Mar 2, 2017 · US
Method for producing matte or crude metal in a suspension smelting furnace and suspension smelting furnace
US-2015315673-A1 · Nov 5, 2015 · US