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. 10, 2010
Filed:
Apr. 28, 2006
Kazuaki Negishi, Kanagawa, JP;
Yasushi Koyano, Kanagawa, JP;
Itaru Sakabe, Kanagawa, JP;
Masahiko Matsui, Kanagawa, JP;
Masashi Onishi, Kanagawa, JP;
Tetsuya Nakanishi, Kanagawa, JP;
Kazuaki Negishi, Kanagawa, JP;
Yasushi Koyano, Kanagawa, JP;
Itaru Sakabe, Kanagawa, JP;
Masahiko Matsui, Kanagawa, JP;
Masashi Onishi, Kanagawa, JP;
Tetsuya Nakanishi, Kanagawa, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A core part of a multimode optical fiber including the core part and a cladding part has a structure composed of a plurality of concentric layers in which a refractive index is decreased stepwise from a first core layer as an innermost layer to a third core layer as an outermost layer. The structure having the plurality of layers is formed by adjusting a quantity of addition of fluorine to silica glass. Fluorine is added to the cladding part so that a refractive index is lower than that of the third core layer as the outermost layer of the core part.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile