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:
Feb. 04, 1986
Filed:
Oct. 13, 1983
Applicant:
Inventors:
Yoshinobu Ueba, Osaka, JP;
Norifumi Matsumiya, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9634 ; 264-15 ; 428394 ;
Abstract
A plastic optical fiber which comprises a core consisting of an amorphous polymer containing a plasticizer and a cladding consisting of a transparent polymer which substantially prevents cross-migration of said plasticizer therein and has a refractive index lower than the core polymer, and which is preferably produced by a process which comprises heat polymerizing a monomer which is polymerized to afford said amorphous polymer and contains said plasticizer, a polymerization initiator and a chain transfer agent, melt spinning said amorphous polymer to form a core and simultaneously cladding the core with said transparent polymer.