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:
Oct. 27, 1998
Filed:
May. 20, 1997
Applicant:
Inventor:
Takumi Itoh, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361784 ; 361748 ; 361750 ; 361751 ; 361753 ; 361788 ; 361791 ; 361792 ; 361794 ; 361795 ; 361736 ; 333-1 ; 333246 ; 333202 ; 333206 ; 439 59 ; 439 66 ; 439 74 ; 4395415 ; 439591 ; 439 67 ; 174259 ; 174254 ; 174262 ; 174266 ;
Abstract
A multilayer printed-circuit board includes at least one inner-layer signal line, first and second ground layers between which the inner-layer signal line is sandwiched via a frame member made of an insulating material in a thickness direction of the multilayer printed-circuit board, and metallic wall members which are provided on inner walls of slits formed in the frame member and extending along the inner-layer signal line. The first and second ground layers and the metallic wall members shielding the inner-layer signal line.