US PATENT SUBCLASS 257 / 94
.~ With heterojunction

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

79  DF  INCOHERENT LIGHT EMITTER STRUCTURE {10}
94.~ With heterojunction {2}
95  DF  .~.~> With contoured external surface (e.g., dome shape to facilitate light emission)
96  DF  .~.~> Plural heterojunctions in same device {1}

DEFINITION

Classification: 257/94

With heterojunction:

(under subclass 79) Subject matter wherein there is at least one junction between semiconductor materials of different chemical compositions.

(1) Note. See the illustration of a heterojunction device in subclass 183.