MAKING MAGNETIC PARTICLE INSPECTIONS

Brand	Owner	Address	Description
MX	MAGNAFLUX CORPORATION	NO. 25 WEST 43RD STREET NEW YORK CITY NY	MAKING MAGNETIC PARTICLE INSPECTIONS OF SUBMITTED FERRO MAGNETIC ARTICLES IN ORDER TO DETERMINE THE PRESENCE OR ABSENCE OF FLAWS, DEFECTS, OR OTHER SURFACE DISCONTINUITIES;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A magnetic recording medium having a non-magnetic support and a magnetic layer formed thereon, wherein the magnetic layer comprises a ferromagnetic powder, a binder and a non-magnetic inorganic powder, and wherein at least 95% of the non-magnetic powder particles contained in the magnetic layer have a particle size of 0.05 to 0.013 ?m, provide that the non-magnetic powder particles are those found in a field of view of 1.8 ?mÃ—2.4 ?m when the surface of the magnetic layer is observed with a scanning electron microscope at a magnification of 50,000 times.