US PATENT SUBCLASS 359 / 344
.~.~ Semiconductor

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

333  DF  OPTICAL AMPLIFIER {11}
342  DF  .~ Particular active medium (e.g., crystal, plasma, fluid, etc.) {2}
344.~.~ Semiconductor

DEFINITION

Classification: 359/344

Semiconductor:

(under subclass 342) Subject matter wherein the active medium is a solid or liquid having a resistivity midway between that of an insulator and a metal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

342, for crystal, plasma, fluid, etc., active medium.

343, for a glass (amorphous) medium.

SEE OR SEARCH CLASS

372, Coherent Light Generators,

43+, for a semiconductor active medium which is not used for amplification of a light beam input.