Lowe, Price, Leblanc, Becker & Shur
Compound type magnetic head
 A compound type magnetic head comprising a main core (11) made of a magnetic material high in saturation flux density and low in inherent resistance, such as sendust or amorphous material and two auxiliary cores (12) sandwiching the main core (11) therebetween. The auxiliary cores (12) each consist of a first member made of a material high in inherent resistance such as ferrite and a second member made of a low melting point glass portion 42 formed on the front side of the first member, namely on the side abutting against the magnetic tape. 
Mitsubishi Denki Kabushiki Kaisha
G G
G11B G11B
inventional inventional
Shoyu Jirou Hiroshi
Watanabe Toriu Yamamoto