PASTE CLEANERS

Brand	Owner	Address	Description
D-Y	DAVIES-YOUNG SOAP COMPANY, THE	DAYTON, OHIO	PASTE CLEANERS, WATERLESS CLEANERS, LIQUID CLEANERS AND LIQUID DRY CLEANERS, FOR HANDS, WALLS, WOODWORK, TILE, AND THE LIKE;DY;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method of etching a semiconductor substrate is described, the method comprising the steps of applying a paste containing an etchant to the substrate, and carrying out a thermal processing step to etch a part or a layer of the substrate where the paste has been applied. The etchant paste is preferably a caustic etching paste. The etchant paste may be applied selectively to a major surface of the substrate to form a pattern of applied paste. For example, the paste may be applied by a printing method, such as screen-printing. The method may be used to produce solar cells.