Method for recovering lead from copper smelting dust
US-2024076759-A1 · Mar 7, 2024 · US
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Obtaining lead
Obtaining lead · 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 | C22B13/00 |
| Official title | Obtaining lead |
| Display label | Obtaining lead |
| 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 |
|---|---|
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Desulfurisation of lead-containing waste
US-2023235427-A1 · Jul 27, 2023 · US
Method for the treatment of iron-containing sludge
US-11519053-B2 · Dec 6, 2022 · US
Method for preparing lead directly from lead-containing material by solid phase reaction
US-11519054-B2 · Dec 6, 2022 · US
Desulfurisation of lead-containing waste
US-2022325376-A1 · Oct 13, 2022 · US
Method for preparing lead directly from lead-containing material by solid phase reaction
US-2020377971-A1 · Dec 3, 2020 · US
Oxygen injection in fluid bed ore concentrate roasting
US-10745777-B2 · Aug 18, 2020 · US
Reduction device using liquid metal
US-10689729-B2 · Jun 23, 2020 · US
Method for the Treatment of Iron-Containing Sludge
US-2019177815-A1 · Jun 13, 2019 · US
Reduction device using liquid metal
US-2017349969-A1 · Dec 7, 2017 · US