Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5210598 | Semiconductor element having a resistance state transition region of two-layer structure | Kazuki Hirakawa | 1993-05-11 |
| 4300224 | Electronic timepiece | Tatsushi Asakawa | 1981-11-10 |
| 4242679 | Liquid crystal display mechanism | Shinji Morozumi, Yoshio Yamazaki, Tatsushi Asakawa | 1980-12-30 |