US PATENT SUBCLASS 257 / 701
.~ Insulating material

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

678  DF  HOUSING OR PACKAGE {18}
701.~ Insulating material {5}
702  DF  .~.~> Of insulating material other than ceramic
703  DF  .~.~> Composite ceramic, or single ceramic with metal
704  DF  .~.~> Cap or lid
705  DF  .~.~> Of high thermal conductivity ceramic (e.g., BeO)
706  DF  .~.~> With heat sink {1}

DEFINITION

Classification: 257/701

Insulating material:

(under subclass 678) Subject matter wherein the housing or package is made of an electrically insulating material.