Methods and compositions for pre-extractive beneficiation of ores
US-12497671-B2 · Dec 16, 2025 · US
Obtaining noble metals
Obtaining noble metals · 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 | C22B11/00 |
| Official title | Obtaining noble metals |
| Display label | Obtaining noble metals |
| Total patents | 61 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 7 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 13 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for the production of a collector alloy comprising precious metal or of pure silver
US-12359283-B2 · Jul 15, 2025 · US
The Use of Cyanogenic Bacteria to Leach Gold
US-2025207219-A1 · Jun 26, 2025 · US
Separation recovery method of metal ions and acidic metal extractant
US-2025201957-A1 · Jun 19, 2025 · US
Metal recovery agent, metal recovery member, metal recovery liquid agent and metal recovery method
US-2025188636-A1 · Jun 12, 2025 · US
Metal recovery material, and method for recovering metal from solution including metal ion or metal complex ion
US-2024384368-A1 · Nov 21, 2024 · US
Bio-leaching compositions and methods for mining metals
US-2024376564-A1 · Nov 14, 2024 · US
Metal and tin alloy having low alpha-ray emission, and method for producing same
US-12000020-B2 · Jun 4, 2024 · US
Process and apparatus for roasting of metal sulfide concentrates and/or residues
US-11649523-B2 · May 16, 2023 · US
Metal and tin alloy having low alpha-ray emission, and method for producing same
US-2023085708-A1 · Mar 23, 2023 · US
Method for the production of a collector alloy comprising precious metal or of pure silver
US-2023078641-A1 · Mar 16, 2023 · US
Apparatus and method for separating a slag material from a collector material
US-2023082129-A1 · Mar 16, 2023 · US
Metal sheet, plated sheet, production method of plated sheet and production method of plated material
US-2022049370-A1 · Feb 17, 2022 · US
Ionic liquid solvents of perhalide type for metals and metal compounds
US-11198921-B2 · Dec 14, 2021 · US
Hyperbranched polymer, metal recovery agent, metal recovery method, and catalytic activity inhibitor
US-11186657-B2 · Nov 30, 2021 · US
Method and system for supercritical fluid extraction of metal
US-2021265678-A1 · Aug 26, 2021 · US
Methods and compositions for pre-extractive beneficiation of ores
US-2021214819-A1 · Jul 15, 2021 · US
Process for recovering gold from ores
US-11041227-B2 · Jun 22, 2021 · US
METAL AND TIN ALLOY HAVING LOW alpha-RAY EMISSION, AND METHOD FOR PRODUCING SAME
US-2020385843-A1 · Dec 10, 2020 · US
Process for recovering gold
US-10669608-B2 · Jun 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B11/00?
- CPC C22B11/00 is the Cooperative Patent Classification code for “Obtaining noble metals.”
- How many patents are filed under CPC C22B11/00 (Obtaining noble metals)?
- Our database includes 61 publications tagged with this CPC code.
- Is patent activity under CPC C22B11/00 growing?
- Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).