Crucible for casting near-net shape (NNS) silicon
US11001529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Mar 8, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B35/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A crucible includes an outer element and an inner element. The outer element includes a first portion that is horizontal at a bottom end of the crucible and a second portion that ascends radially outwardly from the bottom end of the crucible to a top end of the crucible at a first acute angle to a vertical axis. The inner element includes a conus with a cylinder at a base of the conus. The conus descends radially outwardly from the top end of the crucible to the bottom end of the crucible at a second acute angle to the vertical axis. The inner element includes a base portion of the cylinder attached to the first portion of the outer element using a sealant to form a hollow mold between an inner portion of the outer element and an outer portion of the inner element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.