US PATENT SUBCLASS 216 / 55
HEATING OR BAKING OF SUBSTRATE PRIOR TO ETCHING TO CHANGE THE CHEMICAL PROPERTIES OF SUBSTRATE TOWARD THE ETCHANT

Current as of: June, 1999
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216 /   HD   ETCHING A SUBSTRATE: PROCESSES

55HEATING OR BAKING OF SUBSTRATE PRIOR TO ETCHING TO CHANGE THE CHEMICAL PROPERTIES OF SUBSTRATE TOWARD THE ETCHANT

DEFINITION

Classification: 216/55

HEATING OR BAKING OF SUBSTRATE PRIOR TO ETCHING TO CHANGE THE CHEMICAL PROPERTIES OF SUBSTRATE TOWARD THE ETCHANT:

(under the class definition) Process wherein the chemical properties of a substrate toward an etchant are altered by contacting the substrate prior to etching with a source of heat, e.g., alloying, curing, annealing, etc.

SEE OR SEARCH CLASS

65, Glass Manufacturing,

117+, for annealing of glass preform.