Abstract: The present invention relates to active and intelligent additives having hybrid characteristics, that are compatible with polymers, are thermally and mechanically stable, are capable of releasing electrons and/or photons in the presence of chemical compounds, specifically amino compounds, amide compounds, oxygen reducing compounds, water or vapors thereof. The active and intelligent additives incorporate themselves into polymer matrices allowing the obtainment of active and intelligent polymeric articles. These active and intelligent polymeric articles may act as inhibitors of growth of microorganisms and fungi, as well as indicators of the presence of gasses, either in the atmosphere or caused by the decomposition of foodstuffs, for example.

Abstract: A leadless component socket comprises a one- or two-piece leadless component contact socket assembly having a plurality of holes with a respective plurality of spring contacts disposed therein. The socket assembly includes a finger slot or slots to facilitate the manual removal of a chip carrier from the socket and a bias clip and integral keyed corner for assuring proper alignment of the chip carrier with the contacts of the socket assembly. The socket further comprises a cover, a cover support, an insulator assembly and a backup plate or other fastening means for supporting the socket on a printed circuit board. The socket assembly can be configured with a variety of contact terminal ends adapted for a desired mode of circuit board interface. A variety of cover configurations are also accommodated and disclosed.