Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Koji Shimizu0
Date of Patent
February 9, 2010
0Patent Application Number
111335000
Date Filed
May 20, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An optical glass comprising SiO2, B2O3 and La2O3 and one or more oxides selected from the group consisting of ZrO2, Nb2O5 and Ta2O5, having a refractive index of 1.83 or over and an Abbe number of 35 or over and being free of F.
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