CRAYONS USED FOR MARKING ON

Brand	Owner	Address	Description
MARKWELL	MARKWELL MANUFACTURING CO., INC.	NO. 176 FRANKLIN STREET NEW YORK NY	CRAYONS USED FOR MARKING ON METALS, PAPER, WOOD, TEXTILES, GLASS, RUBBER, CHINAWARE AND PLASTICS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Methods for vitrescent marking of substrates, likes bricks, are described that include placing the substrate to be marked and at least one marking material in reactive contact with each other and vitrifying the substrate and the marking material to form a marking below the outer surface of the substrate. The vitrification may be accomplished by irradiating the marking material and the substrate with a radiant energy beam that has a wavelength and an energy level sufficient to vitrify the marking material and the substrate for form a vitrescent marking that is below the outer surface of the substrate.