US PATENT SUBCLASS 257 / 743
.~.~.~ For compound semiconductor contact material

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}
742  DF  .~.~ With a semiconductor conductivity substitution type dopant (e.g., germanium in the case of a gallium arsenide semiconductor) in a contact metal {1}
743.~.~.~ For compound semiconductor contact material

DEFINITION

Classification: 257/743

For compound semiconductor material:

(under subclass 742) Subject matter in which the electrical contact material contacts and contains a dopant for a semiconductor material which is a chemical compound, as contrasted to an elemental semiconductor.