Compositions – Electrically conductive or emissive compositions – Free metal containing
Reexamination Certificate
2011-03-22
2011-03-22
Eashoo, Mark (Department: 1767)
Compositions
Electrically conductive or emissive compositions
Free metal containing
C252S570000, C252S572000, C252S579000
Reexamination Certificate
active
07910026
ABSTRACT:
The electrical contact enhancing coating is a composition that includes finely divided precious metal particles mixed with a dielectric carrier to form a coating. The dielectric carrier is a vegetable oil (preferably soybean-based) carrier of the type used as a dielectric coolant in power transformers, and is preferably high in antioxidant content. In a first embodiment, the precious metal is 100% silver having an average particle size of about 5-10 μm. In a second embodiment, the precious metal is about 65-85% silver and 15-35% gold (average particle size 0.5-1.8 μm), by weight. In a third embodiment, the precious metal is about 65-85% silver, 12.5-30% gold, and 2.5-5% palladium (average particle size 0.5-1.8 μm), by weight. The precious metals may be cryogenically treated prior to mixing with the dielectric carrier.
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Kyle Brian K.
Mrock Timothy R.
Eashoo Mark
Godenschwager Peter F
Litman Richard C.
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