Recovery method for valuable metals in copper anode slime
US-2024287644-A1 · Aug 29, 2024 · US
Recovery from waste materials
Recovery from waste materials · 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 | C22B13/045 |
| Official title | {Recovery from waste materials} |
| Display label | Recovery from waste materials |
| Total patents | 69 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 3 |
| 2017 | 12 |
| 2018 | 4 |
| 2019 | 4 |
| 2020 | 8 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for the treatment of iron-containing sludge
US-12054804-B2 · Aug 6, 2024 · US
Systems and methods for closed-loop recycling of a liquid component of a leaching mixture when recycling lead from spent lead-acid batteries
US-11923518-B2 · Mar 5, 2024 · US
Methods for purifying and recycling lead from spent lead-acid batteries
US-2024021905-A1 · Jan 18, 2024 · US
Methods for purifying and recycling lead from spent lead-acid batteries
US-11791505-B2 · Oct 17, 2023 · US
Method for recovering valuable material from perovskite solar cell
US-2023304125-A1 · Sep 28, 2023 · US
Desulfurisation of lead-containing waste
US-2023235427-A1 · Jul 27, 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
Molten lead scrap submergence apparatus
US-2023037016-A1 · Feb 2, 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
Hydrometallurgical method for recycling lead from spent lead-acid battery paste
US-11502344-B2 · Nov 15, 2022 · US
Desulfurisation of lead-containing waste
US-2022325376-A1 · Oct 13, 2022 · 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
Recycling of lead- and tin-based materials
US-11427478-B2 · Aug 30, 2022 · US
Method for comprehensive recovery of silver-containing lead slag
US-11345975-B2 · May 31, 2022 · US
Recycling of lead-containing waste
US-2022081315-A1 · Mar 17, 2022 · US
Method of pretreatment and bromine recovery of PCB incineration ash
US-11198615-B2 · Dec 14, 2021 · US
Method for the treatment of iron-containing sludge
US-2021371953-A1 · Dec 2, 2021 · 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B13/045?
- CPC C22B13/045 is the Cooperative Patent Classification code for “Recovery from waste materials.”
- How many patents are filed under CPC C22B13/045 (Recovery from waste materials)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC C22B13/045 growing?
- Publication counts under this code: 7 in 2024 vs 5 in 2025 (latest complete years).