Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540449 | Aluminum substrate for magnetic recording media | Koichi Yoshida, Yoshio Hirayama, Yasuo Oka, Takashi Kajiyama | 1985-09-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540449 | Aluminum substrate for magnetic recording media | Koichi Yoshida, Yoshio Hirayama, Yasuo Oka, Takashi Kajiyama | 1985-09-10 |