Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8188937 | Body mounting type display system | Hidefumi Saito, Ryutaro Nasu | 2012-05-29 |
| 6771424 | Head-mounted display device | Keizo Kumai, Tetsuya Kishida, Yoshio Kakuta | 2004-08-03 |
| 6359602 | Head-mounted display device | Ryutaro Nasu, Tetsuo Mayama, Keizou Kumai, Hiroyuki Hatanaka | 2002-03-19 |
| 6292158 | Display system | Ryutaro Nasu, Yasuhiko Handa, Keizou Kumai, Yasuhiro Nakahara | 2001-09-18 |
| 5841887 | Input device and display system | Yukiko Kuwayama | 1998-11-24 |
| D392629 | Head mounted display | Keizou Kumai | 1998-03-24 |