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:
Dec. 23, 2003
Filed:
Feb. 13, 2002
Applicant:
Inventors:
Shouhei Kozakai, Annaka, JP;
Masatoshi Asano, Annaka, JP;
Shigeru Konishi, Annaka, JP;
Toshio Ohba, Annaka, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/02 ;
U.S. Cl.
CPC ...
G02B 6/02 ;
Abstract
In a coated optical fiber comprising a quartz glass fiber, a primary coating and a secondary coating, the secondary coating is formed by curing a resin composition comprising (A) 20-90 wt % of a polyurethane (meth)acrylate oligomer which is synthesized from an alicyclic polyisocyanate, contains 5-90 wt % of a polyurethane (meth)acrylate oligomer having a Mn of up to 1,000, and has an overall Mn of up to 10,000, and (B) 80-10 wt % of an ethylenically unsaturated compound, with electron beams accelerated at 50-125 kV. The coated optical fiber has a minimized transmission loss.