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:
Feb. 07, 2017
Filed:
Feb. 19, 2014
Hoya Corporation, Shinjuku-ku, Tokyo, JP;
Shungo Kuwatani, Tokyo, JP;
Yasuhiro Fujiwara, Tokyo, JP;
HOYA CORPORATION, Tokyo, JP;
Abstract
An aspect of the present invention relates to optical glass, wherein, in a glass composition based on oxides, a content of POis in the range of 20˜34 weight %; a content of BOis over 0 weight % but 10 weight % or less; a weight ratio (BO/PO) is over 0 but less than 0.39; a weight ratio [TiO/(TiO+NbO+WO+BiO+TaO)] is in the range of 0.059˜0.180; and a weight ratio [(PO+BO+SiO)/(NaO+KO+LiO)] is in the range of 1.39˜1.80, the optical glass having a refractive index nd of 1.78˜1.83, and an Abbe's number vd of 20˜25.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile