Patent ID: 11964908
Assignee: NIPPON ELECTRIC GLASS CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  G | IPC B  C

Claim 7:
8. The tempered glass sheet according to claim 1, wherein
the tempered glass sheet comprises, as the glass composition, 2.55 mol % to 15 mol % of P2O5, and 12 mol % to 16.99 mol % of ([Li2O]+[Na2O]+[K2O]), and satisfies the following relationship: [SiO2]+1.2×[P2O5]−3×[Al2O3]−2×[Li2O]−1.5×[Na2O]−[K2O]−[B2O3]≥−22 mol %.