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. 19, 2013
Filed:
Nov. 01, 2011
Junichi Fujisawa, Ibaraki, JP;
Tomoyuki Hirayama, Ibaraki, JP;
Junichi Fujisawa, Ibaraki, JP;
Tomoyuki Hirayama, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Abstract
A resin composition for an optical waveguide is provided, which permits easy formation of a core pattern using an alkali developing liquid and suppresses degradation of the alkali developing liquid. An optical waveguide produced by using the resin composition is provided. The resin composition comprises: (A) an alkali soluble resin, as a major component, having a structural unit represented by formula (1): wherein R, Rand R, which may be the same or different, are each a hydrogen atom or a methyl group; Rand R, which may be the same or different, are each a hydrogen atom or a methyl group; Ris and m+n+p=1, m>0, n>0 and p>0; and (B) a photopolymerization initiator. The optical waveguide includes a substrate, a cladding layer provided thereon, and a core portion provided in the cladding layer for transmitting an optical signal.