Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuaki Hashimoto0
Yoshikazu Hirose0
Date of Patent
February 4, 2014
Patent Application Number
13456913
Date Filed
April 26, 2012
Patent Citations Received
Patent Primary Examiner
Patent abstract
A glass substrate chemically strengthened, includes a primary surface that has a compressive stress layer formed in an uppermost surface layer thereof. The compressive stress layer is configured to enhance strength of the glass substrate due to a compressive stress generated in the compressive stress layer. The compressive layer consists of a layer of a potassium ion concentration equal to or less than 5000 parts per million (ppm).
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