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:
Sep. 14, 2004
Filed:
Jan. 05, 2001
Applicant:
Inventors:
Munehisa Fujimaki, Chiba-ken, JP;
Koichi Takahashi, Chiba-ken, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/7027 ; C03B 3/707 ;
U.S. Cl.
CPC ...
C03B 3/7027 ; C03B 3/707 ;
Abstract
When an optical fiber is formed by drawing a preform , twisting is generated in the optical fiber . An outer diameter of the optical fiber is continuously measured along a longitudinal direction of the optical fiber from two different directions in a plane perpendicular to the advancing direction of the optical fiber by a device for measuring twisting , thus twisting of the optical fiber is measured.