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:
May. 29, 2012
Filed:
Aug. 21, 2009
Jaymin Amin, Corning, NY (US);
Matthew John Dejneka, Corning, NY (US);
Linda Ruth Pinckney, Corning, NY (US);
Katherine Rose Rossington, Corning, NY (US);
Robert Sabia, Corning, NY (US);
Jaymin Amin, Corning, NY (US);
Matthew John Dejneka, Corning, NY (US);
Linda Ruth Pinckney, Corning, NY (US);
Katherine Rose Rossington, Corning, NY (US);
Robert Sabia, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The invention relates to glass articles suitable for use as electronic device housing/enclosure or protective cover which comprise a glass material. Particularly, a housing/enclosure/cover comprising an ion-exchanged glass exhibiting the following attributes (1) radio, and microwave frequency transparency, as defined by a loss tangent of less than 0.03 and at a frequency range of between 15 MHz to 3.0 GHz; (2) infrared transparency; (3) a fracture toughness of greater than 0.6 MPa·m; (4) a 4-point bend strength of greater than 350 MPa; (5) a Vickers hardness of at least 450 kgf/mmand a Vickers median/radial crack initiation threshold of at least 5 kgf, (6) a Young's Modulus ranging between about 50 to 100 GPa; (7) a thermal conductivity of less than 2.0 W/m° C., and (9) and at least one of the following attributes: (i) a compressive surface layer having a depth of layer (DOL) greater and a compressive stress greater than 400 MPa, or, (ii) a central tension of more than 20 MPa.