Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8346034 | Optical selector switch and signal-processing apparatus | Ken Hayakawa, Kazuo Haraoka, Masaaki Hattori, Naoki Kaneko, Tetsujiro Kondo +4 more | 2013-01-01 |
| 7894702 | Method and apparatus of obtaining directivity | Hidehiko Ogasawara, Nozomu Ozaki, Seiji Wada, Toshiyuki Sekiya, Ken Hayakawa +3 more | 2011-02-22 |
| 7889957 | Optical selector switch and signal-processing apparatus | Hidehiko Ogasawara, Nozomu Ozaki, Seiji Wada, Toshiyuki Sekiya, Ken Hayakawa +4 more | 2011-02-15 |