Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374450 | Manufacturing method of magnetic disk | Yoshihiko Onishi | 1994-12-20 |
| 5326607 | Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same | Kazuo Muramatsu, Nobuhiro Ohta, Shunsuke Takada, Masami Takao, Hiroko Nagata +1 more | 1994-07-05 |
| 5322595 | Manufacture of carbon substrate for magnetic disk | Stephen S. Rosenblum | 1994-06-21 |