Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8422672 | Authenticated device, authenticating device and authenticating method | Takehiro Ohkoshi, Keiki Yamada | 2013-04-16 |
| 7721092 | Authenticating device, authenticated device and key updating method | Takehiro Ohkoshi, Keiki Yamada | 2010-05-18 |
| 6030347 | Biological-signal detecting device | Katsuji Nakamura, Hiroyuki Noda, Yoshinori Matsue, Kazumi Ookawa, Haruo Sugai | 2000-02-29 |
| 5993401 | Relax inducing device with heartbeat detection unit | Hiroyuki Inbe, Akihiro Michimori, Kusuo Iwanaga, Kazumi Ookawa | 1999-11-30 |
| 4395654 | Fluorescent display apparatus | Takashi Hattori | 1983-07-26 |
| 4190787 | Phosphorus luminescent display tube | Takao Kishino, Yoichi Mera, Tsutomu Morooka | 1980-02-26 |