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. 01, 2009
Filed:
Apr. 10, 2006
Tomoko Koyama, Hara-mura, JP;
Takeo Kaneko, Misato-mura, JP;
Taketomi Kamikawa, Shiojiri, JP;
Norio Oguchi, Chino, JP;
Atsushi Harada, Suwa, JP;
Tomoko Koyama, Hara-mura, JP;
Takeo Kaneko, Misato-mura, JP;
Taketomi Kamikawa, Shiojiri, JP;
Norio Oguchi, Chino, JP;
Atsushi Harada, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method of manufacturing directional coupler includes forming a first waveguide over a substrate, forming a separate section on respective ends of the first waveguide, and forming a second waveguide stacked over the first waveguide, wherein the first waveguide and the second waveguide are patterned by ink-jet process. The first waveguide and the second waveguide may be formed so as to overlap each other. The method may further include forming a projecting portion on the substrate, wherein the first waveguide being formed on the projection portion.