Oblon, Spivak, McClelland, Maier & Neustadt
Alumina sol coated recording sheet
 An alumina sol coating fluid containing an alumina hydrate and a polyvinyl alcohol and having boric acid or a borate incorporated therein. 
Asahi Glass Company Ltd.
Y B Y B
Y10T B41M Y10T B41M
additional inventional additional additional
Masaaki Hitoshi Yasumasa
Saito Kijimuta Yukawa