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. 24, 1990
Filed:
Nov. 03, 1988
Applicant:
Inventors:
Noboru Nakakuki, Ibaraki, JP;
Kazuhide Oda, Ibaraki, JP;
Masatoshi Tagami, Ibaraki, JP;
Kouichi Okino, Ibaraki, JP;
Tomiya Abe, Ibaraki, JP;
Takanobu Ishibashi, Ibaraki, JP;
Assignee:
Hitachi Cable, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9633 ;
Abstract
An improved plastic optical fiber and a process for fabricating the same are disclosed. The plastic optical fiber comprises a core and a cladding is formed around the core that has a lower refractive index than that of the core. The cladding consists of an inner transparent cladding and an outer colored, opaque cladding. These inner and outer claddings are formed to be bonded together by simultaneous extrusion thereof.