Chemically strengthened glass and method for manufacturing chemically strengthened glass
US11390560B2 · kind B2 · utility
9Cited by
8References
20Claims
0Family size
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Key dates
| Filing date | Jul 11, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jan 13, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C21/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A chemically strengthened glass having a thickness t of 2 mm or less, having a compressive stress value (CS90) at a portion of 90 μm deep from a glass surface being 25 MPa or more, and satisfying a number of fragments generated within a size of 25 mm×25 mm being 20 or less in a fracture test according to an indenter indentation test under a condition of holding a load ranging from 5 kgf to 10 kgf for 15 seconds with a pyramidal diamond indenter having an indenter angle of a facing angle of 60°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.