US PATENT SUBCLASS 257 / 171
.~.~.~ Edge feature (e.g., beveled edge)

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

107  DF  REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR) {19}
168  DF  .~ With means to increase breakdown voltage {2}
170  DF  .~.~ Surface feature (e.g., guard ring, groove, mesa) {1}
171.~.~.~ Edge feature (e.g., beveled edge)

DEFINITION

Classification: 257/171

Edge feature (e.g., beveled edge):

(under subclass 170) Subject matter wherein the surface feature for increasing breakdown voltage is an edge feature (e.g., a beveled) as contrasted with a right angled edge.