Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Magnetic recording medium comprising successive magnetic metallic films of iron, nickel, and cobalt deposited on a substrate
 A metal film type magnetic recording medium in which the saturated magnetic flux density is high and iron having a good corrosion resistance is applied. The magnetic layer comprises metal films formed, in order on a base film, each containing iron, cobalt and nickel as main components. 
Kao Corporation
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Shigemi Yuzo Hirohide Osamu Katsumi Noriyuki Akira
Wakabayashi Matsuo Mizunoya Yoshida Sasaki Kitaori Shiga