Burns, Doane, Swecker & Mathis, LLP
Glass-ceramic composition for recording disk substrate
A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis, from 50.5 to 56 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 4.2 to 10.6 wt % of TiO2.
Minolta Co., Ltd.
C C
C03C C03C
inventional inventional
Hiroshi Toshiharu Hideki Hideki Kazuhiko Akira
Yuki Mori Nagata Kawai Ishimaru Sugimoto