Methods of adjusting carbon and silica content in rice hull ash (RHA) byproducts to control carbothermal reduction forming nanostructured silicon carbide, silicon nitride, silicon oxynitride nanocomposites
US-12506144-B2 · Dec 23, 2025 · US
Preparation by carboreductive nitridation · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B21/0685 |
| Official title | {Preparation by carboreductive nitridation} |
| Display label | Preparation by carboreductive nitridation |
| Total patents | 9 |
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2025 | 3 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12506144-B2 · Dec 23, 2025 · US
US-2025296887-A1 · Sep 25, 2025 · US
US-2025132323-A1 · Apr 24, 2025 · US
US-10662062-B2 · May 26, 2020 · US
US-10400309-B2 · Sep 3, 2019 · US
US-2019169028-A1 · Jun 6, 2019 · US
US-10239757-B2 · Mar 26, 2019 · US
US-2017362087-A1 · Dec 21, 2017 · US
US-2017174515-A1 · Jun 22, 2017 · US