Zirconia-based hollow anodes for improved molten regolith electrolysis
US-2025270713-A1 · Aug 28, 2025 · US
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Silicon
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 | C25B1/33 |
| Official title | Silicon |
| Display label | Silicon |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Solidifying metals or metalloids from a liquid cathode during molten oxide electrolysis
US-2025250690-A1 · Aug 7, 2025 · US
Method for producing metallic aluminum and polysilicon with high-silicon aluminum-containing resource
US-2024247391-A1 · Jul 25, 2024 · US
Method for preparing metallic titanium using titanium-containing oxide slag
US-2024124998-A1 · Apr 18, 2024 · US
Detection device
US-2021348287-A1 · Nov 11, 2021 · US
One-step growth of a dense, photoresponsive silicon film in molten calcium chloride
US-10697080-B2 · Jun 30, 2020 · US
Method and apparatus for producing solar grade silicon using a SOM electrolysis process
US-10266951-B2 · Apr 23, 2019 · US
Low temperature electrochemical production of silicon
US-2018291513-A1 · Oct 11, 2018 · US
Method for producing metal and method for producing refractory metal
US-10072346-B2 · Sep 11, 2018 · US
System and method for electrorefining of silicon
US-10072345-B2 · Sep 11, 2018 · US
One-step growth of a dense, photoresponsive silicon film in molten calcium chloride
US-2018112323-A1 · Apr 26, 2018 · US
Method of producing silicon-plated metal sheet
US-2017335482-A1 · Nov 23, 2017 · US
System and method for purification of electrolytic salt
US-9783898-B2 · Oct 10, 2017 · US
Conical graphite electrode with raised edge
US-9487873-B2 · Nov 8, 2016 · US
Systems for producing silane
US-9487406-B2 · Nov 8, 2016 · US
Method for producing metal and method for producing refractory metal
US-2016215406-A1 · Jul 28, 2016 · US
Electrochemical liquid-liquid-solid deposition processes for production of group IV semiconductor materials
US-9388498-B2 · Jul 12, 2016 · US
Conical graphite electrode with raised edge
US-2015361568-A1 · Dec 17, 2015 · US
Conical graphite electrode with raised edge
US-9150420-B2 · Oct 6, 2015 · US
Method and apparatus for producing solar grade silicon using a som electrolysis process
US-2015259808-A1 · Sep 17, 2015 · US