Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5272689 | Optical head system with transparent contact member | Tsuyoshi Tsujioka, Shigeaki Yamamoto, Fumio Tatezono, Minoru Kume | 1993-12-21 |
| 4795514 | Method of manufacturing an amorphous magnetic head | Kenji Oyamada | 1989-01-03 |
| 4697217 | Magnetic head having a main core of sheet amorphous magnetic material | Kenji Oyamada | 1987-09-29 |
| 4387332 | Apparatus for successively charging rechargeable batteries | Kenji Oyamada | 1983-06-07 |