Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350618 | Magnetic medium comprising a substrate having pits and grooves of specific shapes and depths | Kiyoshi Toyama | 1994-09-27 |
| 5336586 | Magnetic medium and method of manufacturing the same | Kiyoshi Toyama | 1994-08-09 |
| 5281912 | Magneto-optic magnetic-field measuring apparatus for measuring a magnetic field intensity by measuring an angle of diffraction | — | 1994-01-25 |