Compositions – Electrically conductive or emissive compositions – Elemental carbon containing
Reexamination Certificate
2006-10-10
2006-10-10
McGinty, Douglas (Department: 1751)
Compositions
Electrically conductive or emissive compositions
Elemental carbon containing
C252S500000, C252S511000, C174S034000, C977S742000, C977S750000, C361S818000, C428S036910, C428S323000, C428S313300, C428S315500, C428S408000, C428S922000, C428S924000, C423S44500R, C423S447300, C423S447100
Reexamination Certificate
active
07118693
ABSTRACT:
The invention is directed to conformal coatings that provide excellent shielding against electromagnetic interference (EMI). A conformal coating comprises an insulating layer and a conducting layer containing electrically conductive material. The insulating layer comprises materials for protecting a coated object. The conducting layer comprises materials that provide EMI shielding such as carbon black, carbon buckeyballs, carbon nanotubes, chemically-modified carbon nanotubes and combinations thereof. The insulating layer and the conductive layer may be the same or different, and may be applied to an object simultaneously or sequentially. Accordingly, the invention is also directed to objects that are partially or completely coated with a conformal coating that provides EMI shielding.
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Conroy Jeffrey L.
Glatkowski Paul J.
Landis, Jr. David H.
Landrau Nelson
Piche Joseph W.
Eikos, Inc.
McGinty Douglas
Novak Druce & Quigg LLP
Vijayakumar Kallambella
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