Methods for producing a product ingot having low oxygen content
US12351938B2 · kind B2 · utility
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15References
14Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 10, 2023 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Sep 18, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B33/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods for producing a product ingot from a silicon melt held within a crucible are disclosed. The methods involve evaluating one or more ingot puller apparatus to determine if the apparatus is capable of producing low oxygen content silicon product ingots. A sample rod is pulled from the silicon melt and the oxygen content of the sample rod is measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.