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:
May. 06, 2014
Filed:
Oct. 13, 2011
Applicant:
Mikio Ikenishi, Akishina, JP;
Inventor:
Mikio Ikenishi, Akishina, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/247 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to produce a fluorophosphate glass including Pat a small content on the composition thereof, the composition is adjusted so as to provide well-balanced chemical durability and thermal stability. In the production of a fluorophosphate glass in which O/P>3.7, Alcontent is in a predetermined amount or more and pcontent is in a predetermined amount or less, a glass raw material is prepared by using an AlFin which the content of AlOis limited to the range from 1 to 5% by mass, and the raw material is melted to produce the fluorophosphate glass.