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:
Feb. 20, 2007
Filed:
May. 21, 2004
Keiichi Kuramoto, Kadoma, JP;
Youhei Nakagawa, Hirakata, JP;
Mitsuaki Matsumoto, Osaka, JP;
Hiroaki Izu, Hirakata, JP;
Hitoshi Hirano, Nishinomiya, JP;
Nobuhiko Hayashi, Osaka, JP;
Keiichi Kuramoto, Kadoma, JP;
Youhei Nakagawa, Hirakata, JP;
Mitsuaki Matsumoto, Osaka, JP;
Hiroaki Izu, Hirakata, JP;
Hitoshi Hirano, Nishinomiya, JP;
Nobuhiko Hayashi, Osaka, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
An optical device includes a substrate, a core provided on the substrate, a first clad and a second clad formed around the core. The optical device further includes a light absorber layer, provided on the substrate, which absorbs light leaked from the core. The light absorber layer is formed of, for instance, the same material as that constituting the core.