SCIENCE KIT CONTAINING MAGNETS

Brand	Owner	Address	Description
MARVELOUS MAGNETS	PANLINE U.S.A., INC.	454 SOUTH DEAN STREET ENGELWOOD NJ 07631	science kit containing magnets, iron filings, magnetic marbles, metallic magnetic surface, and electromagnets for studying electromagnetism;MAGNETS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Methods are provided for forming a plurality of permanent magnets with two different north-south magnetic pole alignments for use in microelectromechanical (MEM) devices. These methods are based on initially magnetizing the permanent magnets all in the same direction, and then utilizing a combination of heating and a magnetic field to switch the polarity of a portion of the permanent magnets while not switching the remaining permanent magnets. The permanent magnets, in some instances, can all have the same rare-earth composition (e.g. NdFeB) or can be formed of two different rare-earth materials (e.g. NdFeB and SmCo). The methods can be used to form a plurality of permanent magnets side-by-side on or within a substrate with an alternating polarity, or to form a two-dimensional array of permanent magnets in which the polarity of every other row of the array is alternated.