The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2012
Filed:
Feb. 24, 2009
Anatoli Anatolyevich Abramov, Painted Post, NY (US);
Nicholas Dominic Cavallaro, Iii, Corning, NY (US);
Marvin William Kemmerer, Montour Falls, NY (US);
Naiyue Zhou, Painted Post, NY (US);
Anatoli Anatolyevich Abramov, Painted Post, NY (US);
Nicholas Dominic Cavallaro, III, Corning, NY (US);
Marvin William Kemmerer, Montour Falls, NY (US);
Naiyue Zhou, Painted Post, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A method of cutting glass that prevents uncontrolled crack propagation when high background stress is present, either in the form of thermal residual stress, external mechanical stress or a combination thereof. The method includes masking an edge of the glass by blocking the beam using highly reflective or absorptive material located near the glass surface, or deposited on the surface in a form of a thin film (or highly reflective paint) to prevent uncontrolled crack initiation and propagation starting from the glass edge. The initiation of the laser scoring is located at a predetermined distance from the glass edge. Yet another aspect of the invention embodies stopping propagation of the vent at the exiting end of the score line.