Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755426 | Magnetic recording medium and production of the same | Minoru Ichijo, Kunio Wakai | 1988-07-05 |
| 4737415 | Magnetic recording medium and production thereof | Minoru Ichijo, Tsunemi Ohiwa, Takashi Kubota, Kunio Wakai | 1988-04-12 |