US Patent 7808652 Interferometric measurement of DLC layer on magnetic head
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Patent abstract
An explicit relationship is developed between the ratio of average interferometric modulation produced by diamond-like carbon (DLC)-coated magnetic-head surfaces and the thickness of the DLC layer. Accordingly, the thickness of the DLC layer is calculated in various manners from modulation data acquired for the system using object surfaces of known optical parameters.
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US Patent 07808652 Interferometric measurement of DLC layer on magnetic head US Patent 7808652 Interferometric measurement of DLC layer on magnetic head
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Patent Number
0780865200
Patent Number
780865200
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Patent Jurisdiction
Patent Number
078086520
Date of Patent
October 5, 2010
0Patent Application Number
120094240
Date Filed
January 18, 2008
0Official Website
Patent Primary Examiner
Edits on 27 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
078086520
Date of Patent
October 5, 2010
0Patent Application Number
120094240
Date Filed
January 18, 2008
0Official Website
Patent Primary Examiner
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US Patent 07808652 Interferometric measurement of DLC layer on magnetic head
Infobox
Is a
Patent jurisdiction
Patent number
07808652
Date of patent
October 5, 2010
Patent application number
12009424
Date Filed
January 18, 2008
Patent primary examiner
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