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. 14, 2006
Filed:
Nov. 26, 2002
Hideo Kikuchi, Tokyo, JP;
Mikio Oda, Tokyo, JP;
Hikaru Kouta, Tokyo, JP;
Sakae Kitajo, Tokyo, JP;
Yuzo Shimada, Tokyo, JP;
Hideo Kikuchi, Tokyo, JP;
Mikio Oda, Tokyo, JP;
Hikaru Kouta, Tokyo, JP;
Sakae Kitajo, Tokyo, JP;
Yuzo Shimada, Tokyo, JP;
NEC Toppan Circuit Solutions, Inc., Tokyo, JP;
Abstract
After an optical waveguide substrate including a supporting substrate is adhered to an electric wiring board, the supporting substrate alone is dissolved using an organic solvent for removal. Alternatively, the supporting substrate alone is melted through a thermal treatment for removal. Further, a core layer of an optical waveguide is formed on the substrate using a photosensitive resin having a thermal expansion coefficient substantially identical to that of the supporting substrate.