US PATENT SUBCLASS 257 / 457
.~.~.~.~ With particular contact geometry (e.g., ring or grid)

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

414  DF  RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) {4}
428  DF  .~ Electromagnetic or particle radiation {2}
431  DF  .~.~ Light {15}
449  DF  .~.~.~ Schottky barrier (e.g., a transparent Schottky metallic layer or a Schottky barrier containing at least one of indium or tin (e.g., SnO2, indium tin oxide)) {5}
457.~.~.~.~ With particular contact geometry (e.g., ring or grid)

DEFINITION

Classification: 257/457

With particular contact geometry (e.g., ring or grid):

(under subclass 449) Subject matter wherein the device has a specific geometrical arrangement of electrical contacts.