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:
Jul. 05, 1988
Filed:
Apr. 28, 1987
Applicant:
Inventor:
Hirosuke Suzuki, Tokorozawa, JP;
Assignee:
Junkosha Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361414 ; 174 685 ; 1741 / ; 428422 ; 428901 ;
Abstract
A multilayer printed circuit board is provided comprising a plurality of printed circuit boards laminated together, each board being separated from an adjacent board by a layer of a dielectric of porous, expanded polytetrafluoroethylene (PTFE). The dielectric layer may have an adhesive on its surface(s) affixed as a layer or in a pattern of dots. Alternatively, an adhesive may be impregnated within the pores of the porous dielectric. In a preferred embodiment, the dielectric has additional openings or through holes in it, in additon to the pores of the porous dielectric.