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. 09, 2010
Filed:
Jun. 23, 2009
Yoshiko Kasuga, Koganei, JP;
Xuelu Zou, Akishima, JP;
Yoshiko Kasuga, Koganei, JP;
Xuelu Zou, Akishima, JP;
Hoya Corporation, Tokyo, JP;
Abstract
An optical glass having high refractivity and a low sag temperature and having a low-temperature softening property that enables precision press-molding is provided, and the optical glass contains, by mol %, 5 to 50% of BO, 3 to 50% of SiO, 5 to 40% of TiO, 1 to 40% of ZnO, 5 to 20% of LaO, 0 to 10% of GdO, 0 to 15% of NbO, 0 to 10% of ZrO, 0 to 5% of TaO, 0 to 10% of BiO, 0 to 10% of MgO, 0 to 8% of CaO, 0 to 10% of SrO, 0 to 10% of BaO, provided that the total content of MgO, CaO, SrO and BaO is 15% or less, 0 to 20% of LiO, and 0 to 5% of NaO, optionally containing SbOas a refining agent, and having a refractive index (nd) of 1.8 or more and an Abbe's number (νd) of 35 or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile