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. 11, 2014
Filed:
Apr. 18, 2012
Applicant:
Tomoaki Negishi, Shinjuku-ku, JP;
Inventor:
Tomoaki Negishi, Shinjuku-ku, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/14 (2006.01); C03C 3/15 (2006.01); C03C 3/155 (2006.01); C03C 3/064 (2006.01); C03C 3/068 (2006.01); C03C 3/066 (2006.01);
U.S. Cl.
CPC ...
C03C 3/068 (2013.01); C03C 3/066 (2013.01); C03C 3/064 (2013.01); C03C 3/155 (2013.01); C03C 3/14 (2013.01); C03C 3/15 (2013.01);
Abstract
An aspect of the present invention relates to optical glass, which is oxide glass comprising various cationic components in prescribed amounts without Pb, with a refractive index nd of 1.750 to 1.850, an Abbé number νd of 29.0 to 40.0, and a glass transition temperature of less than 630° C.