Method of pretreatment and bromine recovery of PCB incineration ash
US-11198615-B2 · Dec 14, 2021 · US
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Carbonates
Carbonates · 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 | C01G21/14 |
| Official title | Carbonates |
| Display label | Carbonates |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2020 | 1 |
| 2021 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A Method of Pretreatment and Bromine Recovery of PCB Incineration Ash
US-2020262712-A1 · Aug 20, 2020 · US
Method for recovering lead oxide from waste lead paste
US-10135100-B2 · Nov 20, 2018 · US