US PATENT SUBCLASS 438 / FOR 408
.~ Heating and cooling (437/248)

Current as of: June, 1999
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438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

FOR 407  DF  TEMPERATURE TREATMENT MODIFYING PROPERTIES OF SEMICONDUCTOR, E.G., ANNEALING, SINTERING, ETC. (437/247) {1}
FOR 408.~ Heating and cooling (437/248)

DEFINITION

Classification: 438/FOR.408

Heating and cooling:

Foreign art collection for processes including the steps of either increasing the temperature above the ambient environment and then lowering the temperature or lowering the temperature below the ambient environment and then increasing the temperature.