Process for heavy metal removal from iron- and steelmaking flue dust
US-2026043110-A1 · Feb 12, 2026 · US
by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding) · 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 | C22B7/002 |
| Official title | {by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)} |
| Display label | by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding) |
| Total patents | 44 |
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 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 12 |
| 2025 | 8 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for recovering transition metals from lithium secondary batteries
US-2026042132-A1 · Feb 12, 2026 · US
Method for recovering active metal of lithium secondary battery
US-12519150-B2 · Jan 6, 2026 · US
Multi-dimensional ligand-assisted chromatography method for the purification of rare earth elements and other metal ions from waste magnets
US-12516400-B2 · Jan 6, 2026 · US
Samarium cobalt magnet recycling
US-2025391594-A1 · Dec 25, 2025 · US
Two stage dross treatment
US-2025250654-A1 · Aug 7, 2025 · US
Method and system for recycling metal of lithium secondary battery
US-2025215522-A1 · Jul 3, 2025 · US
Chloride based volatility for the recovery of uranium from nuclear fuel salt
US-2025182919-A1 · Jun 5, 2025 · US
Production of Neodymium and Other Rare Earth Metals Using Hydrogen Augmented Magnesium Alloy
US-2025109460-A1 · Apr 3, 2025 · US
Reclamation of metal from coked catalyst
US-2025066201-A1 · Feb 27, 2025 · US
Method of recycling aluminum scrap and apparatus for recycling aluminum scrap
US-2025051876-A1 · Feb 13, 2025 · US
Method for manufacturing battery material
US-2025046900-A1 · Feb 6, 2025 · US
Method for co-extraction of vanadium, titanium and chromium from vanadium slag
US-12157931-B2 · Dec 3, 2024 · US
Method for recovering lithium precursor from lithium secondary battery
US-2024396111-A1 · Nov 28, 2024 · US
Process for the recovery of lithium
US-2024384371-A1 · Nov 21, 2024 · US
Process for the recovery of lithium
US-2024384370-A1 · Nov 21, 2024 · US
Method for recycling Li-ion batteries
US-2024347800-A1 · Oct 17, 2024 · US
Method for recovering rare earth elements from NdFeB waste and use of ferric oxide as raw material of manganese-zinc ferrite
US-12104225-B2 · Oct 1, 2024 · US
Recovery method for valuable metals in copper anode slime
US-2024287644-A1 · Aug 29, 2024 · US
Method for recovering lithium precursor from lithium secondary battery
US-2024262703-A1 · Aug 8, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B7/002?
- CPC C22B7/002 is the Cooperative Patent Classification code for “by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding).”
- How many patents are filed under CPC C22B7/002 (by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding))?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC C22B7/002 growing?
- Publication counts under this code: 12 in 2024 vs 8 in 2025 (latest complete years).