Glass and glass ceramic composite and method
US12330980B2 · kind B2 · utility
0Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2019 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | May 22, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2203/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glass glass-ceramic composite comprises a substrate comprising an alkali-containing glass bulk, the bulk comprising Al2O3 and SiO2 and alkali, and a glass-ceramic surface layer, the surface layer comprising an alkali-depleted glass ceramic comprising Al2O3 and SiO2 with at least 5% crystalline phase by volume, wherein the alkali-depleted glass ceramic surface layer comprises a mol % Al2O3 of at least 51%. A method of preparing the composite is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.