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. 09, 2008
Filed:
Sep. 12, 2002
Yujiro Kawaguchi, Osaka, JP;
Shigeki Naitoh, Ibaraki, JP;
Toshiyuki Hasegawa, Nara, JP;
Sumitomo Chemical Company Limited, Osaka, JP;
Abstract
A photosemiconductor encapsulating resin composition, excellent in light transmittance, ultraviolet resistance and heat resistance, comprising the following component (A) and component (B): wherein Rto Rrepresent each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, Rand Rmay be bonded to form an alkylene group having 1 to 8 carbon atoms; Rrepresents an alkylene group; a methylene group contained the alkylene group and the alkyl group represented by Rto Rmay be substituted by an ether group and/or carbonyl group; Yand Yrepresent each independently an oxygen atom, or sulfur atom, is provided.