Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648155 | Magnetic recording medium | Kenji Tokui, Masashi Yoshikawa, Jyunji Oshita, Yuji Ohata | 1997-07-15 |
| 5605752 | Magnetic recording medium containing magnetic powder of iron nitride | — | 1997-02-25 |