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. 26, 2013
Filed:
Dec. 23, 2008
Toru Nakai, Ibi-gun, JP;
Satoru Kawai, Ibi-gun, JP;
Hiroshi Niwa, Ibi-gun, JP;
Yoshiyuki Iwata, Ibi-gun, JP;
Toru Nakai, Ibi-gun, JP;
Satoru Kawai, Ibi-gun, JP;
Hiroshi Niwa, Ibi-gun, JP;
Yoshiyuki Iwata, Ibi-gun, JP;
IBIDEN Co., Ltd., Ogaki-shi, JP;
Abstract
A multilayer printed circuit board has an insulation layer, a first conductor layer provided over a first side of the insulation layer, a second conductor layer provided over a second side of the insulation layer opposite to the first side, and multiple filled vias electrically connecting the first conductor layer and the second conductor layer. The filled vias have upper surfaces, respectively, and each of the upper surfaces is made such that a difference between a lowest point and a highest point of each of the upper surfaces is less than or equal to about 7 μm.