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:
Jan. 21, 2014
Filed:
Aug. 26, 2009
Applicant:
Mikio Ikenishi, Tokyo, JP;
Inventor:
Mikio Ikenishi, Tokyo, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/247 (2006.01); C03C 3/17 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provide a fluorophosphate glass comprising 3 to 25 cation % of P, more than 30 cation % and 40 cation % or less of Al, 0.5 to 20 cation % of Liand 65 anion % or more of Fas glass ingredients, and having a liquid phase temperature of 700° C. or less. The fluorophosphate glass of the present invention has ultra low dispersibility and stability, and is preferably used for glass materials for press molding, optical element blanks and optical elements.