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, 1986
Filed:
Oct. 16, 1984
Applicant:
Inventors:
Michihisa Kyoto, Yokohama, JP;
Naoki Yoshioka, Yokohama, JP;
Gotaro Tanaka, Yokohama, JP;
Minoru Watanabe, Yokohama, JP;
Hiroshi Shimba, Yokohama, JP;
Nobuo Inagaki, Katsuta, JP;
Assignees:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Nippon Telegraph & Telephone Public Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ; C03B / ;
U.S. Cl.
CPC ...
65-312 ; 65 182 ; 65DI / ;
Abstract
A method for producing a glass preform for optical fibers by heating a glass soot preform consisting of glass fine particles made mainly of silicon oxide, which method comprises the steps of: