US Patent 7638449 Optical glass
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Patent abstract
This invention provides an optical glass including, by mass %: 30 to 40% of B2O3; 2.5 to 6% of Li2O; 10 to 17% of ZnO; 12 to 22% of La2O3; 15 to 25% of Gd2O3; 0 to 5% of SiO2; 0 to 5% of Bi2O3; 0 to 15% of Al2O3; 0 to 3% of ZrO2; 0 to 5% of WO3; 0 to 5% of Ta2O5; 0 to 3% of TiO2; 0 to 5% of Y2O3; and 0 to 5% of MgO+CaO+SrO+BaO.
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US Patent 07638449 Optical glass US Patent 7638449 Optical glass
Infobox
Patent Number
0763844900
Patent Number
763844900
Edits on 24 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
076384490
Date of Patent
December 29, 2009
0Patent Application Number
121921490
Date Filed
August 15, 2008
0Official Website
Patent Primary Examiner
Edits on 27 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
076384490
Date of Patent
December 29, 2009
0Patent Application Number
121921490
Date Filed
August 15, 2008
0Official Website
Patent Primary Examiner
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US Patent 07638449 Optical glass
Infobox
Is a
Patent jurisdiction
Patent number
07638449
Date of patent
December 29, 2009
Patent application number
12192149
Date Filed
August 15, 2008
Patent primary examiner
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