CHEMICAL ETCHANT FOR SILICA FOR

Brand	Owner	Address	Description
SILOXIDE ETCHANT	TRANSENE COMPANY, INCORPORATED	ROUTE ONE, TURNPIKE ROWLEY MA 01969	CHEMICAL ETCHANT FOR SILICA FOR USE IN SEMICONDUCTOR PROCESSING;THE WORD ETCHANT IS DISCLAIMED APART FROM THE MARK.;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A semiconductor package contains a metal leadframe that has been specially treated by roughening it with a chemical etchant. The roughening process enhances the adhesion between the leadframe and the molten plastic during the encapsulation of the leadframe and thereby reduces the tendency of the package to separate when exposed to moisture and numerous temperature cycles. In one embodiment, the leadframe made of copper is roughened with a chemical etchant that contains sulfuric acid and hydrogen peroxide.