Patent ID: 11912605
Assignee: CORNING INCORPORATED
Field: Other special machines (Mechanical engineering)
Classification: CPC C | IPC B  C

Claim 4:
5. A glass article, comprising:
an unpolished glass wafer,
wherein the unpolished glass wafer comprises a composition selected from the group consisting of borosilicate glasses, aluminoborosilicate glasses, aluminosilicate glasses, fluorosilicate glasses, phosphosilicate glasses, fluorophosphate glasses, sulfophosphate glasses, germanate glasses, vanadate glasses, phosphate glasses and borate glasses,
wherein the composition further comprises an upper liquidus viscosity of less than 10 Poise, and
wherein the unpolished glass wafer has a thickness variation from about 0.01 μm to about 50 μm and a warp from about 0.01 μm to about 10 μm.