US Patent 7491436 Optical information recording medium
Patent 7491436 was granted and assigned to RICOH COMPANY,LTD. on February, 2009 by the United States Patent and Trademark Office.
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Patent abstract
An optical information recording medium comprising a substrate, recording layer and reflecting layer, characterized in that a layer containing a mixture of carbide and oxide is disposed over a surface of the reflecting layer which faces to the recording layer. The carbide is a carbide of at least one metal selected from Ti, Zr, V, Nb, Ta, Cr, Mo and W, and the oxide is an oxide of at least one metal selected from Ti, Zr, V, Nb, Ta, Cr, Mo and W.
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US Patent 07491436 Optical information recording medium US Patent 7491436 Optical information recording medium
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Patent Number
0749143600
Patent Number
749143600
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Official Website
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Infobox
Is a
Current Assignee
0
Patent Jurisdiction
Patent Number
074914360
Date of Patent
February 17, 2009
0Patent Application Number
112469530
Date Filed
October 11, 2005
0Official Website
Patent Primary Examiner
Edits on 25 Sep, 2022
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Infobox
Is a
Current Assignee
0
Patent Jurisdiction
Patent Number
074914360
Date of Patent
February 17, 2009
0Patent Application Number
112469530
Date Filed
October 11, 2005
0Official Website
Patent Primary Examiner
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US Patent 07491436 Optical information recording medium
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07491436
Date of patent
February 17, 2009
Patent application number
11246953
Date Filed
October 11, 2005
Patent primary examiner
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