Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6999169 | Spectrometer | Yoshihiro Sanpei, Kenji Ogino, Yasuyuki Suzuki, Raiju Okada, Shuuhei Okada | 2006-02-14 |
| 6885447 | Spectrometer and optical spectrum analyzer | Yasuyuki Suzuki, Yoshihiro Sanpei, Kenji Ogino, Raiju Okada, Shuuhei Okada +1 more | 2005-04-26 |
| 6552325 | Photo diode array | Yoshihito Sanpei, Akira Miura, Katsutoshi Sakakibara, Tsuyoshi Yakihara, Tadashige Fujita +3 more | 2003-04-22 |
| 6008487 | Optical-fiber inspection device | Yoshihiko Tachikawa, Yoshihiro Sampei, Takaaki Hirata, Yasuyuki Suzuki, Mamoru Arihara | 1999-12-28 |
| 5844235 | Optical frequency domain reflectometer for use as an optical fiber testing device | Yoshihiko Tachikawa, Yoshihiro Sampei, Takaaki Hirata, Yasuyuki Suzuki, Mamoru Arihara | 1998-12-01 |