Tempered glass plate and production method for tempered glass plate
US11104606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2017 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Dec 20, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2218/365
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A tempered glass sheet (G4) includes a compressive stress layer having a compressive stress on a main surface, and a tensile stress layer having a tensile stress in an inside. The tempered glass sheet (G4) includes: a highly anisotropic stress region (Qa) which is arranged in at least part of an end edge portion, and which has a stress showing anisotropy in a plane parallel to the main surface; and a low anisotropic stress region (Qb) which is arranged on a center side in a main surface direction so as to be adjacent to the highly anisotropic stress region (Qa), and which has a stress showing lower anisotropy than the highly anisotropic stress region (Qa) in the same plane parallel to the main surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.