Alloy treatment method
US-2024392408-A1 · Nov 28, 2024 · US
by substitution, e.g. by cementation
by substitution, e.g. by cementation · 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 | C22B3/46 |
| Official title | by substitution, e.g. by cementation |
| Display label | by substitution, e.g. by cementation |
| Total patents | 74 |
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 | 3 |
| 2016 | 9 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 10 |
| 2025 | 13 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Energy reclamation and carbon-neutral system for critical mineral extraction
US-12148902-B2 · Nov 19, 2024 · US
Selective leaching
US-2024336992-A1 · Oct 10, 2024 · US
Method for processing alloy
US-2024318282-A1 · Sep 26, 2024 · US
Method for reductive extraction of iridium, rhodium and/or ruthenium
US-2024309488-A1 · Sep 19, 2024 · US
Energy reclamation and carbon-neutral system for critical mineral extraction
US-2024313284-A1 · Sep 19, 2024 · US
Method for extracting lithium from waste lithium battery
US-12062765-B2 · Aug 13, 2024 · US
Methods of selectively recovering palladium from a palladium-containing material
US-12012642-B2 · Jun 18, 2024 · US
Method for biological recovery of metals from electrical and electronic waste
US-2024141457-A1 · May 2, 2024 · US
Method for extracting lithium from waste lithium battery
US-2024088468-A1 · Mar 14, 2024 · US
Method for treating sulfide
US-2023295766-A1 · Sep 21, 2023 · US
Method for disposal of waste printed circuit board thermal cracking slag and smelting soot
US-11692238-B2 · Jul 4, 2023 · US
Method for treating alloy
US-2023071697-A1 · Mar 9, 2023 · US
Method For Cooperative Disposal Of Waste Printed Circuit Board Thermal Cracking Slag And Smelting Ash
US-2023037130-A1 · Feb 2, 2023 · US
Method for recovering precious metal
US-2022389537-A1 · Dec 8, 2022 · US
Method for preparing lead directly from lead-containing material by solid phase reaction
US-11519054-B2 · Dec 6, 2022 · US
Method of treating wastewater
US-11505480-B2 · Nov 22, 2022 · US
Hydrometallurgical method for recycling lead from spent lead-acid battery paste
US-11502344-B2 · Nov 15, 2022 · US
Method of treating wastewater
US-11479490-B2 · Oct 25, 2022 · US
Process for the recovery of metals from oxidic ores
US-2022290273-A1 · Sep 15, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/46?
- CPC C22B3/46 is the Cooperative Patent Classification code for “by substitution, e.g. by cementation.”
- How many patents are filed under CPC C22B3/46 (by substitution, e.g. by cementation)?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/46 growing?
- Publication counts under this code: 10 in 2024 vs 13 in 2025 (latest complete years).