Oxidative and reductive leaching methods
US-2025305089-A1 · Oct 2, 2025 · US
Smelting or converting
Smelting or converting · 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 | C22B15/0028 |
| Official title | {Smelting or converting} |
| Display label | Smelting or converting |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 4 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for treating lithium ion battery waste
US-12157927-B2 · Dec 3, 2024 · US
Method for recovering valuable metal from used lib
US-2024229190-A9 · Jul 11, 2024 · US
Method for recovering valuable metal from used lib
US-2024132995-A1 · Apr 25, 2024 · US
Alloy powder and method for producing same
US-11859264-B2 · Jan 2, 2024 · US
Method and system for comprehensive recovery and utilization of copper-nickel sulfide ore
US-11459636-B2 · Oct 4, 2022 · US
Comprehensive recovery method of pyrolysis polymetallic product from waste integrated circuit board
US-11447846-B2 · Sep 20, 2022 · US
Comprehensive Recovery Method Of Pyrolysis Polymetallic Product From Waste Integrated Circuit Board
US-2022205063-A1 · Jun 30, 2022 · US
Metallurgical furnace
US-2022065532-A1 · Mar 3, 2022 · US
Alloy powder and method for producing same
US-2021126300-A1 · Apr 29, 2021 · US
METHOD FOR RECOVERING Cu AND METHOD OF PREPARING ELECTROLYTIC COPPER
US-2021032722-A1 · Feb 4, 2021 · US
Method for treating lithium ion battery waste
US-2020263276-A1 · Aug 20, 2020 · US
Fire refining of blister copper
US-10648060-B2 · May 12, 2020 · US
Treatment of complex sulfide concentrate
US-10501824-B2 · Dec 10, 2019 · US
Method and system for comprehensive recovery and utilization of copper-nickel sulfide ore
US-2019352740-A1 · Nov 21, 2019 · US
Method for refining sulfidic copper concentrate
US-10435769-B2 · Oct 8, 2019 · US
Method of converting copper containing material
US-10428404-B2 · Oct 1, 2019 · US
Scrap melting in anode furnace processes
US-10422020-B2 · Sep 24, 2019 · US
Method for refining sulfidic copper concentrate
US-2019144970-A1 · May 16, 2019 · US
Treatment of complex sulfide concentrate
US-2018298467-A1 · Oct 18, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B15/0028?
- CPC C22B15/0028 is the Cooperative Patent Classification code for “Smelting or converting.”
- How many patents are filed under CPC C22B15/0028 (Smelting or converting)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC C22B15/0028 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).