Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6618239 | Key switch and keyboard | Kouki Takahashi, Kouji Ishikawa, Kiyokazu Moriizumi, Kiyoshi Wada, Katsumi Harada +3 more | 2003-09-09 |
| 6191494 | Semiconductor device and method of producing the same | Nobuo Ooyama, Shinichiro Maki, Fumitoshi Fujisaki, Syunichi Kuramoto, Yukio Saigo +4 more | 2001-02-20 |
| 5401926 | Data input device with a manually operable key having static electricity releasing function | Michihiro Aoyama | 1995-03-28 |