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:
Apr. 09, 2013
Filed:
Apr. 09, 2010
Kota Noda, Ogaki, JP;
Tsutomu Yamauchi, Ogaki, JP;
Satoru Kawai, Ogaki, JP;
Ibiden Co., Ltd., Ogaki-shi, JP;
Abstract
A method for manufacturing a double-sided circuit board includes preparing a substrate having the first and second surfaces, forming a first hole having a first opening with a diameter Ron the first surface of the substrate, forming a second hole having a second opening with a diameter Ron the second surface of the substrate, forming a third hole having a diameter smaller than Rand/or Rand connecting the first and second holes such that a penetrating hole formed of the first hole, the second hole and the third hole is formed in the substrate, forming a first conductive circuit on the first surface of the substrate, forming a second conductive circuit on the second surface of the substrate, and filling the penetrating hole with conductive material such that a through-hole conductor electrically connecting the first conductive circuit and the second conductive circuit is formed.