Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7423735 | Beam irradiation apparatus | Yoshihisa Suzuki | 2008-09-09 |
| 7351944 | Beam irradiation device | Masato Yamada, Yoichi Tsuchiya, Shuichi Ichiura, Masahiro Higuchi, Mikio Ichihashi +2 more | 2008-04-01 |
| 6243354 | Optical disk having high recording density | Shuichi Ichiura | 2001-06-05 |
| 6009072 | High density optical disc player | Yoichi Tsuchiya, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1999-12-28 |
| 5914926 | Optical recording medium for checking compatibility of an optical pickup device and method of checking an optical pickup device using the same | Yoshiaki Maeno, Yasuhiro Kodama | 1999-06-22 |
| 5896367 | High density optical disc and optical disc player | Yoichi Tsuchiya, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1999-04-20 |
| 5838657 | High density optical disc and optical disc player | Yoichi Tsuchiya, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1998-11-17 |
| 5689495 | High density optical disc and optical disc player | Yoichi Tsuchiya, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1997-11-18 |
| 5659534 | Apparatus for reproducing optical information contained disks of various recording densities | Yoichi Tsuchiya, Shuichi Ichiura, Osamu Ota | 1997-08-19 |
| 5477527 | High density optical disc and optical disc player | Yoichi Tsuchiya, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1995-12-19 |