Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5959754 | Optical wireless communication system | Yoshitaka Sakurai, Kazutoshi Hirohashi, Kazuo ICHIHARA, Takaaki Takeda | 1999-09-28 |
| 5349463 | Optical radio repeater with signal quality detection | Kazutoshi Hirohashi, Hiroshi Horii, Hideo Koike, Yoshiaki Yunoki, Tetsuo Fukasawa +7 more | 1994-09-20 |
| 5289306 | Repeater system | Kazutoshi Hirohashi, Akio Yoshikawa, Takaaki Takeda, Keishi Ushijima | 1994-02-22 |