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. 15, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Eisuke Sasaoka, Kanagawa, JP;
Yuji Kobayashi, Kanagawa, JP;
Tomomi Moriya, Kanagawa, JP;
Yoichi Ishiguro, Kanagawa, JP;
Shigeru Semura, Kanagawa, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B / ; C03B / ; G02B / ;
U.S. Cl.
CPC ...
65377 ; 65378 ; 65384 ; 65406 ; 65408 ; 65411 ; 264-125 ;
Abstract
The present invention provides a method for manufacturing an optical fiber coupler in which an optical fiber is elongated and heated by using a heating source under a constant tension. The heat source is controlled based on the ratio of a target elongating speed and an actual elongating speed of the optical fiber.