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:
Jun. 29, 1999
Filed:
Apr. 14, 1997
Applicant:
Inventors:
Tsuyoshi Nonaka, Yokohama, JP;
Toshifumi Hosoya, Yokohama, JP;
Yuji Kobayashi, Yokohama, JP;
Yasuo Matsuda, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-124 ; 264-128 ; 264-129 ; 264-27 ;
Abstract
A process is provided for producing a plastic optical fiber by drawing while melting an optical fiber preform under heating. The optical fiber preform includes at least a core containing an organic polymer and a cladding layer disposed on the outer circumference of the core and containing an organic polymer. The drawing is conducted under a drawing tension of 10 g or more, and preferably under a drawing tension of 100 g or less, until winding-up of the optical fiber.