Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7336903 | Optical wireless transmission apparatus | Takashi Iwamoto | 2008-02-26 |
| 6527173 | System of issuing card and system of certifying the card | Kenji Narusawa, Kazunori Namiki, Toshiro Kohno, Tadashi Aizawa, Yoshinari Yokochi +1 more | 2003-03-04 |
| 5926302 | Bi-directional optical wireless communication apparatus and method of Bi-directional optical wireless communication | Kazutoshi Hirohashi, Atsushi Sakamoto | 1999-07-20 |
| 5532858 | Optical radio transmission system and a method for adjusting optical axes thereof | Kazutoshi Hirohashi, Teruhiko Shinomiya, Keishi Ushijima, Takaaki Takeda, Masamichi Satou +2 more | 1996-07-02 |