Process for heavy metal removal from iron- and steelmaking flue dust
US-2026043110-A1 · Feb 12, 2026 · 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 | C22B13/025 |
| Official title | {Recovery from waste materials} |
| Display label | Recovery from waste materials |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Molten lead scrap submergence apparatus
US-12467118-B2 · Nov 11, 2025 · US
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
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
Recovery method for valuable metals in copper anode slime
US-2024287644-A1 · Aug 29, 2024 · US
Method, apparatus and system for processing a composite waste source
US-2024247335-A1 · Jul 25, 2024 · US
Pyro-metallurgical process in a rotary kiln
US-12018345-B2 · Jun 25, 2024 · US
Method, apparatus and system for processing a composite waste source
US-11884992-B2 · Jan 30, 2024 · US
Furnace controller and method of operating a furnace
US-11740022-B2 · Aug 29, 2023 · US
Molten lead scrap submergence apparatus
US-2023037016-A1 · Feb 2, 2023 · US
Pyro-metallurgical process in a rotary kiln
US-2022178001-A1 · Jun 9, 2022 · US
Furnace Controller and Method of Operating a Furnace
US-2022026147-A1 · Jan 27, 2022 · 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
Method for recycling lead paste in spent lead-acid battery
US-11196107-B2 · Dec 7, 2021 · US
A method, apparatus and system for processing a composite waste source
US-2021189520-A1 · Jun 24, 2021 · US
Method for comprehensively processing noble lead
US-10982299-B2 · Apr 20, 2021 · US
Method for comprehensively processing noble lead
US-2020208238-A1 · Jul 2, 2020 · US
Method and apparatus for retrieving valuable metals step by step from waste printed circuit board particles
US-10655198-B2 · May 19, 2020 · US
Method for recycling lead paste in spent lead-acid battery
US-2019305388-A1 · Oct 3, 2019 · US
Method and apparatus for retrieving valuable metals step by step from waste printed circuit board particles
US-2018187285-A1 · Jul 5, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B13/025?
- CPC C22B13/025 is the Cooperative Patent Classification code for “Recovery from waste materials.”
- How many patents are filed under CPC C22B13/025 (Recovery from waste materials)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C22B13/025 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).