Patent ID: 11970421
Assignee: CORNING INCORPORATED
Field: Machine tools (Mechanical engineering)
Classification: CPC C  B  Y | IPC B  C

Claim 14:
15. A method of making a glass article, the method comprising:
3D printing a glass or glass-ceramic feature on and extending from a surface of a substrate such that the 3D printed glass or glass-ceramic feature is attached to the surface a contact interface between the 3D printed glass or glass -ceramic feature and only a portion of the substrate; and
forming a compressive stress region at an exterior perimeter surface of the 3D printed glass or glass-ceramic feature defining a central tension region interior thereof,
wherein the contact interface has a minimum contact dimension,
the compressive stress region has a maximum depth measured inward from the exterior perimeter surface at a direction orthogonal to the exterior perimeter surface, and
the minimum contact dimension is at least three times greater than the maximum depth of the compressive stress region.