Impurity removal method of silicate solid waste and its application
US-12589420-B2 · Mar 31, 2026 · US
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from metallurgical processes, e.g. slag, furnace dust, galvanic waste
from metallurgical processes, e.g. slag, furnace dust, galvanic waste · 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 | C04B33/138 |
| Official title | from metallurgical processes, e.g. slag, furnace dust, galvanic waste |
| Display label | from metallurgical processes, e.g. slag, furnace dust, galvanic waste |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2022 | 1 |
| 2023 | 5 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Usage of ferrochrome slag with optimized particle size as a blasting abrasive
US-12558759-B2 · Feb 24, 2026 · US
Porous material and method of forming the same
US-2025171358-A1 · May 29, 2025 · US
Elaboration of an advanced ceramic made of recycled industrial steel waste
US-11787745-B2 · Oct 17, 2023 · US
Usage of ferrochrome slag with optimized particle size as a blasting abrasive
US-2023256566-A1 · Aug 17, 2023 · US
Impurity Removal Method of Silicate Solid Waste and Its Application
US-2023211392-A1 · Jul 6, 2023 · US
Ceramic composite and method of preparing the same
US-11691922-B2 · Jul 4, 2023 · US
Ceramic composite and method of preparing the same
US-2023076574-A1 · Mar 9, 2023 · US
Seamless, and/or graded transition from sintered alternative-binders-based impermeable concrete to glass for architectural and industrial applications
US-11414345-B2 · Aug 16, 2022 · US
Method for recovering valuable metals and simultaneously preparing ceramsite by roasting cyanide tailing
US-10626053-B2 · Apr 21, 2020 · US
Elaboration of an advanced ceramic made of recycled industrial steel waste
US-2020055781-A1 · Feb 20, 2020 · US
A method for recovering valuable metals and simultaneously preparing ceramsite by roasting cyanide tailing
US-2019382312-A1 · Dec 19, 2019 · US
Seamless and impermeable joints resulting in a functionally graded material: transitioning from glass to geopolymer mortar
US-2019047910-A1 · Feb 14, 2019 · US
Ultra-light ultra-strong proppants
US-10017687-B2 · Jul 10, 2018 · US
Proppant bead forming methods
US-2017066962-A1 · Mar 9, 2017 · US
Ultra-light ultra-strong proppants
US-2015329769-A1 · Nov 19, 2015 · US