Method and device for the purification of powders
US-2023366060-A1 · Nov 16, 2023 · US
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Refining in the solid state
Refining in the solid state · 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 | C22B9/14 |
| Official title | Refining in the solid state |
| Display label | Refining in the solid state |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 2 |
| 2021 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing manganese raw material and method for manufacturing manganese-containing molten steel
US-2021054479-A1 · Feb 25, 2021 · US
Methods for making zirconium based alloys and bulk metallic glasses
US-10494698-B1 · Dec 3, 2019 · US
Hydrogen gas production method, and steel production method
US-2019202692-A1 · Jul 4, 2019 · US
Method for producing high-purity calcium
US-10138533-B2 · Nov 27, 2018 · US
Methods for making zirconium based alloys and bulk metallic glasses
US-9938605-B1 · Apr 10, 2018 · US
Methods of deoxygenating metals having oxygen dissolved therein in a solid solution
US-9669464-B1 · Jun 6, 2017 · US
Method for Producing High-Purity Calcium
US-2017029921-A1 · Feb 2, 2017 · US
Method for producing cathode copper
US-2017029967-A1 · Feb 2, 2017 · US
Method for producing high-purity calcium
US-9499877-B2 · Nov 22, 2016 · US