Method and apparatus for recovering copper, bronze and lead from mixture of copper oxide, tin oxide and lead oxide
US-2025075287-A1 · Mar 6, 2025 · US
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by dry processes
by dry processes · 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 | C22B13/02 |
| Official title | by dry processes |
| Display label | by dry processes |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and apparatus for recovering copper, bronze and lead from mixture of copper oxide, tin oxide and lead oxide
US-12227819-B2 · Feb 18, 2025 · US
Method and apparatus for recovering copper, bronze and lead from mixture of copper oxide, tin oxide and lead oxide
US-2022002837-A1 · Jan 6, 2022 · US
Reduction device using liquid metal
US-10689729-B2 · Jun 23, 2020 · US
Device for fractional condensation of arsenic lead vapor mixture and application method thereof
US-2019284658-A1 · Sep 19, 2019 · US
Reduction device using liquid metal
US-2017349969-A1 · Dec 7, 2017 · US
Apparatus and methods for purifying lead
US-9234258-B2 · Jan 12, 2016 · US