Method For Producing Porous Nanocrystalline Silicon
US-2024018006-A1 · Jan 18, 2024 · US
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by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon
by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon · 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 | C01B33/039 |
| Official title | by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon |
| Display label | by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Recycling silicon from batteries with silicon-based active materials
US-2023395887-A1 · Dec 7, 2023 · US
Systems and methods for producing high-purity fine powders
US-11498839-B2 · Nov 15, 2022 · US
Method for producing active material
US-2021384499-A1 · Dec 9, 2021 · US
Systems and methods for producing high-purity fine powders
US-2021316996-A9 · Oct 14, 2021 · US
Systems and methods for producing high-purity fine powders
US-2020377370-A1 · Dec 3, 2020 · US
Primary distillation boron reduction
US-10294109-B2 · May 21, 2019 · US
Thermoelectric conversion material and method for producing same
US-2018212131-A1 · Jul 26, 2018 · US
Primary distillation boron reduction
US-2018141819-A1 · May 24, 2018 · US
Production of polycrystalline silicon in substantially closed-loop systems
US-9394180-B2 · Jul 19, 2016 · US
Method for producing silicon for solar cells by metallurgical refining process
US-9352970-B2 · May 31, 2016 · US
Method for producing silicon for solar cells by metallurgical refining process
US-2015135770-A1 · May 21, 2015 · US