Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350618 | Magnetic medium comprising a substrate having pits and grooves of specific shapes and depths | Masayuki Togawa | 1994-09-27 |
| 5336586 | Magnetic medium and method of manufacturing the same | Masayuki Togawa | 1994-08-09 |