US Patent No: 4,408,255

Number of patents in Portfolio can not be more than 2000

Absorptive electromagnetic shielding for high speed computer applications

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Abstract

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An electromagnetic shield comprising two portions in which the first portion consists of a magnetically permeable mat with a conductive sheet bonded to one side and an insulating sheet bonded to the opposite side. In a typical application, this first portion is positioned with the insulating sheet making contact to the underside of a printed circuit board. The second portion consists of a magnetically permeable mat with a conductive sheet bonded to each side. The mat is porous and one of the conductive sheets contains a plurality of openings to permit cooling air which is forced through the pores of the mat to pass through these openings. The conductive sheet containing the plurality of openings is positioned adjacent the components on the upper side of a printed circuit board to provide cooling as well as closely positioned shielding.

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Patent Owner(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adkins, Harold 56 Camille La., East Patchogue, NY 11772 1 45

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Gottlieb Commercial Company A/S (1)
4,287,243 Mat for multispectral camouflage of objects and permanent constructions 28 1979

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
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AMPHENOL CORPORATION (2)
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AT&T Bell Laboratories (1)
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ENTERASYS NETWORKS, INC. (1)
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5,334,800 Flexible shielded circuit board 38 1993
 
RENESAS ELECTRONICS CORPORATION (1)
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Other [Check patent profile for assignment information] (1)
H526 Non-metallic chassis structure with electromagnetic field attenuating capability 20 1987