Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 17, 2009
Patent Application Number
11788570
Date Filed
April 20, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
Methods and apparatus provide for a glass or glass ceramic substrate, including: a bulk layer; an enhanced positive ion concentration layer; and a reduced positive ion concentration layer, wherein the enhanced positive ion concentration layer contains substantially all modifier positive ions from the reduced positive ion concentration layer as a result of migration, the substrate does not include any further material thereon.
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