Method for recovering scandium
US-10156002-B2 · Dec 18, 2018 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C22B3/22 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 366 |
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 | 15 |
| 2016 | 22 |
| 2017 | 12 |
| 2018 | 21 |
| 2019 | 21 |
| 2020 | 22 |
| 2021 | 15 |
| 2022 | 28 |
| 2023 | 47 |
| 2024 | 64 |
| 2025 | 77 |
| 2026 | 22 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing hematite for ironmaking
US-10125025-B2 · Nov 13, 2018 · US
Systems and methods for monitoring metal recovery systems
US-2018274057-A1 · Sep 27, 2018 · US
Method of preparing a gold-containing solution and process arrangement for recovering gold and silver
US-10060007-B2 · Aug 28, 2018 · US
Method for leaching valuable metals contained in waste denitrification catalyst by using roasting and water leaching
US-10017839-B2 · Jul 10, 2018 · US
Materials derived from coal using environmentally friendly solvents
US-2018187289-A1 · Jul 5, 2018 · US
Systems and methods for monitoring metal recovery systems
US-9982321-B2 · May 29, 2018 · US
Alternative additives to enhance slurry dewatering
US-9896366-B2 · Feb 20, 2018 · US
Method for recovering cyanide from a barren solution
US-9890052-B2 · Feb 13, 2018 · US
Method for recovering scandium
US-2018023168-A1 · Jan 25, 2018 · US
Method of manufacturing a launder and launder
US-2018015388-A1 · Jan 18, 2018 · US
Systems and methods for monitoring metal recovery systems
US-2017356065-A1 · Dec 14, 2017 · US
Hydrometallurgical process for nickel oxide ore
US-9783869-B2 · Oct 10, 2017 · US
Activated carbon for noble metal adsorption, noble metal adsorption filter, and method for recovering noble metals
US-9782750-B2 · Oct 10, 2017 · US
Method of selective extraction of platinoids, from a support containing same, with an extraction medium consisting of a supercritical fluid and an organic ligand
US-2017253947-A1 · Sep 7, 2017 · US
Method for producing hematite for ironmaking
US-9752209-B2 · Sep 5, 2017 · US
Process for recovering heavy metal ions
US-2017190594-A1 · Jul 6, 2017 · US
Hydrometallurgical process for nickel oxide ore
US-2017175227-A1 · Jun 22, 2017 · US
Alternative additives to enhance slurry dewatering
US-9630855-B2 · Apr 25, 2017 · US
Solvent extraction method and solvent extraction settler
US-9631254-B2 · Apr 25, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/22?
- CPC C22B3/22 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C22B3/22 (Chemistry & Metallurgy)?
- Our database includes 366 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/22 growing?
- Publication counts under this code: 64 in 2024 vs 77 in 2025 (latest complete years).