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:
Nov. 06, 1990
Filed:
Jul. 28, 1989
Applicant:
Inventor:
Toshiyasu Tanaka, Yokohama, JP;
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 963 ; 350 962 ;
Abstract
An optical fiber material comprising at least one optical fiber and a wrapping material wrapping at least a part of the peripheral surface of the optical fiber in the axial direction of the optical fiber, wherein in its section taken at right angles to the axis of the optical fiber, the wrapping material holds the optical fiber tightly at its inside surfaces which face the optical fiber in the meridian direction of the optical fiber, or hold it tightly in at least three sites of its inner circumferential surface facing the optical fiber. The present invention provide also processes and devices for preparation thereof.