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:
Apr. 03, 2012
Filed:
Feb. 21, 2006
Applicant:
Susumu Uehara, Sagamihara, JP;
Inventor:
Susumu Uehara, Sagamihara, JP;
Assignee:
Kabushiki Kaisha Ohara, Sagamihara-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/066 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical glass of the present invention has optical constants of a refractive index (nd) within a range from 1.75 to 1.85 and an Abbe number (νd) within a range from 35 to 45, comprises SiOand BOas essential components and one or more components selected from the group consisting of ZrO, NbO, TaOand WO, has a glass transition temperature (Tg) of 580° C. or below and has weathering resistance (surface method) of Class 1 or Class 2.