Nixon & Vanderhye
Magnetic ribbon and magnetic core
 Disclosed are a magnetic ribbon on at least one surface of which fine particles formed of a nonmagnetic inorganic substance having insulating properties are attached and a magnetic core around which this magnetic ribbon is wound or on which it is laminated. The fine particles serve as a spacer to form a layer of air between adjacent layers of the magnetic ribbon. 
Mitsui Petrochemical Industries Ltd.
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Yasushi Takashi Masato Kazuhiko Toshikazu
Ueda Matsuoka Takeuchi Suzuki Furihata