Separation process of metals copper anode slime based on oxidation potential modulation
US-12252760-B1 · Mar 18, 2025 · US
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from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge · 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 | C22B11/044 |
| Official title | {from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge} |
| Display label | from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for selective extraction of gold by niacin
US-2024018624-A1 · Jan 18, 2024 · US
Method of separating and recovering bromine from printed circuit board incineration ash by two-step process
US-11858822-B2 · Jan 2, 2024 · US
Method for disposal of waste printed circuit board thermal cracking slag and smelting soot
US-11692238-B2 · Jul 4, 2023 · US
A method of separating and recovering bromine from printed circuit board incineration ash by two-step process
US-2023192488-A1 · Jun 22, 2023 · US
Method For Cooperative Disposal Of Waste Printed Circuit Board Thermal Cracking Slag And Smelting Ash
US-2023037130-A1 · Feb 2, 2023 · US
Method for enriching precious metals from printed circuit board incineration ash from molten pool by circulating chlorination
US-11447845-B2 · Sep 20, 2022 · US
System, apparatus, and process for leaching metal and storing thermal energy during metal extraction
US-11390933-B2 · Jul 19, 2022 · US
A Method for Enriching Precious Metals from Printed Circuit Board Incineration Ash from Molten Pool by Circulating Chlorination
US-2021324496-A1 · Oct 21, 2021 · US
System apparatus and process for leaching metal and storing thermal energy during metal extraction
US-10907238-B2 · Feb 2, 2021 · US
Process of extraction of a platinum group metal or gold from organic compositions with surfactants
US-10752976-B2 · Aug 25, 2020 · US
Process and device for burn-off of precious metal-containing materials
US-10724116-B2 · Jul 28, 2020 · US
Process for digestion of a metallic iridium- and/or iridium oxide-comprising mixture of solid particles
US-10590511-B2 · Mar 17, 2020 · US
Use of Surfactants to Extract a Platinum Group Metal or Gold from Organic Compositions
US-2019316223-A1 · Oct 17, 2019 · US
Optimized ore processing using molten salts for leaching and thermal energy source
US-2018245177-A1 · Aug 30, 2018 · US
Process and device for burn-off of precious metal-containing materials
US-2018195150-A1 · Jul 12, 2018 · US
Process for digestion of a metallic iridium- and/or iridium oxide-comprising mixture of solid particles
US-2018112290-A1 · Apr 26, 2018 · US
Purification of coal and fly ash by ionic liquids
US-2016222532-A1 · Aug 4, 2016 · US