Metal and tin alloy having low alpha-ray emission, and method for producing same
US-12000020-B2 · Jun 4, 2024 · US
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Refining
Refining · 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 | C22B25/08 |
| Official title | Refining |
| Display label | Refining |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 2 |
| 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.
Metal and tin alloy having low alpha-ray emission, and method for producing same
US-2023085708-A1 · Mar 23, 2023 · US
Method of purifying target material for an EUV light source
US-11317501-B2 · Apr 26, 2022 · US
High purity tin and method for manufacturing same
US-11136680-B2 · Oct 5, 2021 · US
High purity tin and method for producing same
US-11118276-B2 · Sep 14, 2021 · US
METAL AND TIN ALLOY HAVING LOW alpha-RAY EMISSION, AND METHOD FOR PRODUCING SAME
US-2020385843-A1 · Dec 10, 2020 · US
Method and apparatus for purifying target material for euv light source
US-2020015343-A1 · Jan 9, 2020 · US
High purity tin and method for manufacturing same
US-2019338431-A1 · Nov 7, 2019 · US
Method and apparatus for purifying target material for EUV light source
US-10455680-B2 · Oct 22, 2019 · US
High purity tin and method for manufacturing same
US-10400342-B2 · Sep 3, 2019 · US
High purity tin and method for producing same
US-2019153607-A1 · May 23, 2019 · US
High purity tin and method for manufacturing same
US-2018298506-A1 · Oct 18, 2018 · US
Method and apparatus for purifying target material for euv light source
US-2017247778-A1 · Aug 31, 2017 · US
Isotope displacement refining process for producing low alpha materials
US-9708689-B2 · Jul 18, 2017 · US
Isotope displacement refining process for producing low alpha materials
US-2016298208-A1 · Oct 13, 2016 · US
Low α-dose tin or tin alloy, and method for producing same
US-9394590-B2 · Jul 19, 2016 · US
Process for producing high-purity tin
US-9340850-B2 · May 17, 2016 · US