US Patent 7172798 High density read only optical disc
Patent 7172798 was granted and assigned to Samsung on February, 2007 by the United States Patent and Trademark Office.
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Patent Inventor Names
Hyun-ki Kim0
In-oh Hwang0
Joo-ho Kim0
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Patent abstract
A high density read only optical disc is provided. The high density read only optical disc includes a substrate having pits formed thereon; a crystalline reading assist layer; a first dielectric layer; and a mask layer composed of a metal oxide. The high density read only optical disc does not require a laser with a short wavelength or a large numerical aperture of an objective lens.
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US Patent 07172798 High density read only optical disc US Patent 7172798 High density read only optical disc
Infobox
Patent Number
071727980
Patent Number
71727980
Edits on 24 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
071727980
Date of Patent
February 6, 2007
0Patent Application Number
109543620
Date Filed
October 1, 2004
0Official Website
Patent Primary Examiner
Edits on 8 Jun, 2022
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US Patent 07172798 High density read only optical disc
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07172798
Date of patent
February 6, 2007
Patent application number
10954362
Date Filed
October 1, 2004
Patent primary examiner
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