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:
Nov. 18, 2014
Filed:
Jan. 25, 2013
Kyocera Slc Technologies Corporation, Yasu, JP;
Kyocera SLC Technologies Corporation, Yasu-Shi, Shiga, JP;
Abstract
A wiring board of the present invention includes a substrate including a woven fabric formed of a plurality of glass fibers and a resin covering the woven fabric; a plurality of through holes T penetrating through the substrate in a thickness direction thereof; and a plurality of through hole conductors adhered to inner walls of the through holes T respectively. The through holes T include a first through hole and a second through hole, and, in the woven fabric, the number of the glass fibers through which the first through hole penetrates is larger than the number of the glass fibers through which the second through hole penetrates. In the first and second through holes, portions thereof having narrowest widths are surrounded by the woven fabric, and the narrow width portion of the first through hole is smaller than the narrow width portion of the second through hole.