Glass compositions with high refractive indexes and low densities
US12415747B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Sep 7, 2023 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Sep 7, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C3/097
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glass composition having a content of SiO2 that is greater than or equal to about 44.0 mol. % and less than or equal to about 60.0 mol. % and a content of ZnO that is less than or equal to about 1.0 mol. %. Additionally, the glass composition is essentially free of Pb and Bi. The glass composition also has a refractive index that is greater than or equal to 1.75 and a density that is less than or equal to about 4.5 g/cm3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.