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:
Jul. 01, 1986
Filed:
Aug. 19, 1985
Applicant:
Inventors:
Tetsuya Nakai, Kanagawa, JP;
Yoshinori Mimura, Saitama, JP;
Osamu Shinbori, Tokyo, JP;
Hideharu Tokiwa, Saitama, JP;
Assignee:
Kokusai Denshin Denwa Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
65-2 ; 65134 ; 65DI / ; 501 30 ; 501 40 ;
Abstract
A fluoride glass for infrared optical transmission fiber is purified for dehydration and deoxidation to reduce transmission loss by reacting melted fluoride glass with NF.sub.3 gas at temperature between 500.degree. C. and 800.degree. C. No scattering loss is increased by the present purification as decomposed product in the reaction does not precipitate.