US PATENT SUBCLASS 257 / 90
.~.~.~ With heterojunction

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

79  DF  INCOHERENT LIGHT EMITTER STRUCTURE {10}
88  DF  .~ Plural light emitting devices (e.g., matrix, 7-segment array) {4}
89  DF  .~.~ Multi-color emission {1}
90.~.~.~ With heterojunction

DEFINITION

Classification: 257/90

With heterojunction:

(under subclass 89) Subject matter wherein there is at least

one heterojunction, i.e., wherein the junction separates semiconductor materials of different chemical composition.