Free-formed quartz glass ingots and method for making same
US9290404B2 · kind B2 · utility
0Cited by
21References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2014 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jan 15, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method to form quartz glass ingots of ultra low contamination and defect levels by firing a high-purity quartz form as the feedstock, wherein the quartz glass ingot is free-formed on a platen rotating concentrically with the feedstock quartz article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.