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:
Jul. 01, 2008
Filed:
Feb. 23, 2005
Tomohiro Utaka, Chuo-ku, JP;
Hideaki Takase, Chuo-ku, JP;
Yuuichi Eriyama, Chuo-ku, JP;
JSR Corporation, Tokyo, JP;
Abstract
A radiation-sensitive resin composition for forming optical waveguides, which comprises (A) a novolac type epoxy resin and (B) a photo-acid generator. The composition is used as materials for a core portionof an optical waveguide, and the like. In the composition, component (A) is represented by the following general formula (1). (In the formula, Ris a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an aralkyl group; and n is an integer from 0 to 10.) The composition is excellent in patterning properties and the like in curing process, and is also excellent in heat resistance, transmission characteristics, and long-term reliability after the optical waveguide has been formed.