Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D312822 | Portable computer | Noboru Watabe, Masatoshi Iwamoto, Toru Ichihashi | 1990-12-11 |
| D294250 | Integrated voice and data terminal | Norio Watanabe, Takashi Tokura, Shinsuke Hoshina, Syuzo Kato | 1988-02-16 |