Method for separating cobalt and nickel
US-12577636-B2 · Mar 17, 2026 · US
Sulfides; Oxysulfides
Sulfides; Oxysulfides · 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 | C01G51/15 |
| Official title | Sulfides; Oxysulfides |
| Display label | Sulfides; Oxysulfides |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sulfurized perovskite nanosheets, synthesis and uses thereof
US-12544742-B1 · Feb 10, 2026 · US
Cobalt sulfide/reduced graphite oxide composite and application thereof in gas sensors
US-12534384-B2 · Jan 27, 2026 · US
Process for metal sulphidation
US-2025313491-A1 · Oct 9, 2025 · US
Electrode material leaching method and method for separating cobalt and nickel
US-2025215527-A1 · Jul 3, 2025 · US
Process for the recovery of li, ni and co
US-2025154627-A1 · May 15, 2025 · US
Process for the synthesis of nanoparticles of transition metal chalcogenides
US-12252397-B2 · Mar 18, 2025 · US
Nanoparticles and systems and methods for synthesizing nanoparticles through thermal shock
US-2025058307-A1 · Feb 20, 2025 · US
Cobalt sulfide/reduced graphite oxide composite and application thereof in gas sensors
US-2024360000-A1 · Oct 31, 2024 · US
Method for extracting valuable metal from low-matte nickel converter slag
US-12018346-B2 · Jun 25, 2024 · US
Method for extracting valuable metal from low-matte nickel converter slag
US-2024035116-A1 · Feb 1, 2024 · US
Method for separating cobalt and nickel
US-2023313337-A1 · Oct 5, 2023 · US
System and method for making quantum dots
US-11518934-B2 · Dec 6, 2022 · US
Nanoparticles and systems and methods for synthesizing nanoparticles through thermal shock
US-2022347643-A1 · Nov 3, 2022 · US
Nanoparticles and systems and methods for synthesizing nanoparticles through thermal shock
US-11369929-B2 · Jun 28, 2022 · US
A process for the synthesis of nanoparticles of transition metal chalcogenides
US-2022194795-A1 · Jun 23, 2022 · US
Method of preparing cathode active material and cathode active material
US-11342552-B2 · May 24, 2022 · US
Method of preparing cathode active material and cathode active material
US-2021043923-A1 · Feb 11, 2021 · US
System and method for making quantum dots
US-10767110-B2 · Sep 8, 2020 · US
Method for providing a high capacity cathode material with improved rate capability performance
US-10581075-B2 · Mar 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G51/15?
- CPC C01G51/15 is the Cooperative Patent Classification code for “Sulfides; Oxysulfides.”
- How many patents are filed under CPC C01G51/15 (Sulfides; Oxysulfides)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC C01G51/15 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).