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:
Apr. 27, 1993
Filed:
Sep. 27, 1991
Applicant:
Inventors:
Hiroshi Suganuma, Yokohama, JP;
Hiroaki Takimoto, Yokohama, JP;
Hiroshi Yokota, Yokohama, JP;
Masumi Fukuma, Yokohama, JP;
Kazuhiko Arimoto, Tokyo, JP;
Assignees:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumiden Opcom Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65-421 ; 65-311 ; 65 111 ;
Abstract
In a method of producing an optical fiber coupler, in which glass portions of a plurality of optical fibers are heated so as to be fusion bonded to each other and then, are heated so as to be stretched, the improvement comprising: a gas burner which acts as a heat source and has a plurality of gas nozzles arranged in an axial direction of the optical fibers so as to be fixed in position during heating of the glass portions.