Method for separating cobalt and nickel
US-12577636-B2 · Mar 17, 2026 · US
Sulfides; Oxysulfides · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01G53/11 |
| Official title | Sulfides; Oxysulfides |
| Display label | Sulfides; Oxysulfides |
| Total patents | 30 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 5 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12577636-B2 · Mar 17, 2026 · US
US-2025313491-A1 · Oct 9, 2025 · US
US-2025215527-A1 · Jul 3, 2025 · US
US-2025154627-A1 · May 15, 2025 · US
US-12252397-B2 · Mar 18, 2025 · US
US-12057550-B2 · Aug 6, 2024 · US
US-11981996-B2 · May 14, 2024 · US
US-11967716-B2 · Apr 23, 2024 · US
US-2023313337-A1 · Oct 5, 2023 · US
US-2023141275-A1 · May 11, 2023 · US
US-11519068-B2 · Dec 6, 2022 · US
US-2022298601-A1 · Sep 22, 2022 · US
US-2022246934-A1 · Aug 4, 2022 · US
US-2022194795-A1 · Jun 23, 2022 · US
US-2022109181-A1 · Apr 7, 2022 · US
US-11214849-B2 · Jan 4, 2022 · US
US-2021324515-A1 · Oct 21, 2021 · US
US-2021254193-A1 · Aug 19, 2021 · US
US-11063291-B2 · Jul 13, 2021 · US
US-11007538-B2 · May 18, 2021 · US
Answers are generated from the same data shown on this page.