Oblon, Spivak, McClelland, Maier & Neustadt
Polyester films, magnetic recording media and film capacitors produced therefrom
 Disclosed herein is a polyester film containing specific fine spherical silica particles. The film of the present invention is especially suitable as a base film for a magnetic recording medium or dielectric for a capacitor. The films of the present invention have the markedly improved properties such as surface properties, electromagnetic properties, electrical properties, etc. due to the excellent dispersibliity of the particles in the film. 
Diafoil Company, Limited
Y Y G G C C C Y C C Y
Y10T Y10T G11B G11B C08K C08J C08G Y10T C08K C08J Y10S
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Kazuyuki Kenji Yoshio Shigeo Chikakazu Kazuo Toshifumi Nobuyasu Kichinojo Masahiko Masashi Shigeyuki
Akatsu Kato Meguro Utsumi Kawaguchi Endo Takisawa Shudo Tomitaka Fujimoto Inagaki Watanabe