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:
Aug. 13, 2013
Filed:
Dec. 24, 2008
Mikihiro Kashio, Tokyo, JP;
Takashi Tamada, Tokyo, JP;
Naohumi Izumi, Tokyo, JP;
Lintec Corporation, Tokyo, JP;
Abstract
A molding material includes a polyorganosiloxane compound having a ladder structure including a repeating unit shown by the following formula (I) in the molecule as a main component, a sealing material includes the molding material, and a sealed optical device includes an optical device that is sealed with a cured product of the sealing material. The molding material produces a cured product that exhibits excellent transparency and heat resistance for a long time. wherein A represents a single bond or a linking group, Rrepresents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, Xrepresents a halogen atom, a haloalkyl group having 1 to 10 carbon atoms, or a cyano group, Rrepresents a substituted or unsubstituted phenyl group, an alkyl group having 1 to 20 carbon atoms which may have a substituent (excluding a halogen atom and a cyano group), or an alkenyl group having 2 to 20 carbon atoms, and l, m, and n are arbitrary positive numbers, provided that l and n are not 0 at the same time.