US PATENT SUBCLASS 257 / 768
.~.~ Refractory or platinum group metal or alloy or silicide thereof

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

734  DF  COMBINED WITH ELECTRICAL CONTACT OR LEAD {14}
741  DF  .~ Of specified material other than unalloyed aluminum {10}
768.~.~ Refractory or platinum group metal or alloy or silicide thereof {2}
769  DF  .~.~.~> Platinum group metal or silicide thereof
770  DF  .~.~.~> Molybdenum, tungsten, or titanium or their silicides

DEFINITION

Classification: 257/768

Refractory or platinum group metal or alloy or silicide thereof:

(under subclass 741) Subject matter wherein the specified contact or lead material is a refractory metal or a platinum group metal, i.e., a metal found in groups IVA, VA, VIA or VIIIA (other than iron (Fe), nickel (Ni) or cobalt (Co)) of the periodic table of the elements or a silicide (i.e., a binary compound of silicon), usually with a more electropositive element or radical, thereof.