Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5051970 | Magneto-optic recording system with overwrite capability | Osamu Ishii, Koutarou Nonaka, Tetsuo Iijima | 1991-09-24 |
| 4642245 | Iron oxide magnetic film and process for fabrication thereof | Osamu Ishii, Fumikatsu Yoshimura | 1987-02-10 |
| 4618901 | High density magnetic head | Yasushi Maeda, Osamu Ishii, Shizuka Yoshii | 1986-10-21 |
| 4544612 | Iron oxide magnetic film and process for fabrication thereof | Osamu Ishii, Fumikatsu Yoshimura | 1985-10-01 |