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. 17, 1979
Filed:
Apr. 17, 1978
Mikio Nishihara, Yokohama, JP;
Kyoichiro Kawano, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A multi-layer printed circuit board has a through hole extending therein outside the mounting portion of a component mounted on the surface layer of the board. The component has a lead pad on the surface layer of a first printed circuit board and a modification pad on the surface layer between the through hole and the lead pad. The through hole extends through the first board to inside the mounting portion via a pattern of an internal wiring layer of the board. A second printed circuit board is joined to the first board at the internal layers of each to form a unitary integrated circuit board. Another through hole extends through the first and second boards inside the mounting portion of the integrated printed circuit board. The pattern and a selected wiring layer of the second board are thereby connected via the other through hole. Additional through holes extend through the second board and interconnect the layers of the second board. The additional through holes are positioned in areas devoid of the first-mentioned through hole.