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:
Jun. 05, 1990
Filed:
Nov. 01, 1988
Applicant:
Inventors:
Kikuo Wakino, Muko, JP;
Harufumi Mandai, Takatsuki, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428209 ; 428210 ; 428426 ; 428432 ; 428433 ; 428901 ; 501119 ; 501120 ; 501125 ; 501 66 ; 501 77 ; 501153 ; 501154 ; 174266 ; 361397 ;
Abstract
A multilayer printed circuit board comprises plural insulating layers integrated into one body, and internal wiring conductor layers located on the internal insulating layers, characterized in that conductor paths in each internal conductor layer are locally separated from the insulating layer by a cavity or porous layer provided at the boundaries between the path and insulating layer adjacent thereto. At least one insulating layer between internal conductor layers may be provided with a layered space or porous layer therein.
Wakino, Kikuo. (1990). Multilayer printed circuit board (U.S. Patent No. 4931354). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4931354
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile