Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672423 | Magnetic recording medium having an underlayer containing three different powders | Kiyomi Ejiri | 1997-09-30 |
| 5645917 | Magnetic recording medium | Kiyomi Ejiri, Shinji Saito, Satoru Hayakawa | 1997-07-08 |