.~ Multiple stages of heating or heating at multiple temperatures or application of temperature gradient
DEFINITION
Classification: 436/157
Multiple stages of heating or heating at multiple temperatures or application of temperature gradient:
(under subclass 155) Subject matter wherein the material is subjected to plural heating temperatures in one or more zones or to a varying temperature in a single zone.
(1) Note. Preheating of the material is construed to be a stage of heating and is the subject matter of this subclass.
(2) Note. Heating that is continuously varied, e.g., a temperature gradient, would be classified here.
