US PATENT SUBCLASS 257 / 257
.~.~ Light responsive or combined with light responsive device

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

213  DF  FIELD EFFECT DEVICE {6}
256  DF  .~ Junction field effect transistor (unipolar transistor) {15}
257.~.~ Light responsive or combined with light responsive device {1}
258  DF  .~.~.~> In imaging array

DEFINITION

Classification: 257/257

Light responsive or combined with light responsive device:

(under subclass 256) Subject matter wherein the JFET generates an electrical signal when light energy is incident upon it or is combined with a light responsive device.