Electricity: conductors and insulators – Anti-inductive structures – Shielded
Reexamination Certificate
2006-11-14
2006-11-14
Reichard, Dean A. (Department: 2831)
Electricity: conductors and insulators
Anti-inductive structures
Shielded
C174S252000, C174S259000, C174S350000, C174S386000, C257S717000, C361S804000, C361S818000, C454S184000
Reexamination Certificate
active
07135644
ABSTRACT:
A permeable conductive shield providing protection from electromagnetic interference and electrostatic discharge has a laminated structure suitable for application to the foil side or the component side of a circuit board. The laminated structure includes an array of foam spacers arranged with spaces between them, a layer of foam attached to the top of the spacers, a first insulating sheet on the layer of foam spacers; a conductive sheet on the first insulating sheet, and a second insulating sheet on the conductive sheet. Each of the layers has a multiplicity of through holes aligned with corresponding through holes in the other layers and with the spaces between the foam spacers so as to allow airflow through the structure. The layers are bonded together with intervening adhesive layers. A pressure-sensitive adhesive is applied to the bottom of the spacers for attaching the permeable conductive shield to the circuit board.
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Fredericksen Ross T.
Gilliland Don Alan
International Business Machines - Corporation
Nino Adolfo
Rabin & Berdo P.C.
Reichard Dean A.
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