The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Oct. 23, 2020
Sumita Optical Glass, Inc., Saitama, JP;
Dai Anzai, Saitama, JP;
Sumita Optical Glass, Inc., Saitama, JP;
Abstract
The multicomponent oxide glass has a composition including: 45-53 mol % SiO; 22-30 mol % BO; 5-9 mol % AlO; 0.02-0.10 mol % SbO; 0-18 mol % LiO; 0-18 mol % NaO; 0-18 mol % KO; 0-13 mol % MgO; 0-13 mol % CaO; 0-13 mol % BaO; and 0-13 mol % ZnO. When the total content of LiO, NaO, and KO is X mol % and the total content of MgO, CaO, BaO, and ZnO is Y mol %, 11≤X≤18 and 14≤X+Y≤24 hold, and the value of βOH calculated from βOH=α/t, where α represents a height of an absorption peak due to OH groups, observed in a range of 3400 cmto 3800 cmof an infrared absorption spectrum in no unit and t represents a thickness of the glass in cm, is 4 cmor more.