Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8427922 | Optical pickup device and optical disc device | Noboru Mamiya, Kenji Nagatomi | 2013-04-23 |
| 8040779 | Optical pickup device and optical disc device | Kenji Nagatomi | 2011-10-18 |
| 8023387 | Optical pickup device | Kenji Nagatomi | 2011-09-20 |
| 7990835 | Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus | Kenji Nagatomi, Seiichiro Takahashi | 2011-08-02 |
| 7990836 | Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus | Kenji Nagatomi | 2011-08-02 |
| 7916612 | Optical pickup apparatus and focal-point adjusting method | Kenji Nagatomi | 2011-03-29 |
| 7876648 | Optical pick-up capable of eliminating stray beams | Kazushi Mori, Naoyuki Takagi | 2011-01-25 |
| 7852735 | Optical pickup device | Kazushi Mori, Kenji Asano, Kenji Nagatomi, Shogo Suzuki, Naoyuki Takagi | 2010-12-14 |
| 6123431 | Backlight apparatus and light guide plate | Yasuko Teragaki, Youichiro Goto | 2000-09-26 |
| 6025866 | Superresolution optical pickup apparatus | Yoichi Tsuchiya, Yasuyuki Kanou, Seiji Kajiyama, Koichi Tada, Shigeki Hori | 2000-02-15 |
| 5999685 | Light guide plate and surface light source using the light guide plate | Youichiro Goto, Michiaki Sato, Yasuko Teragaki, Kenji Torazawa, Masahiro Higuchi +1 more | 1999-12-07 |
| 5777970 | Optical disk readout apparatus | Seiji Kajiyama, Yoichi Tsuchiya, Shuichi Ichiura, Tateo Toyama | 1998-07-07 |
| 5598394 | Optical pick-up | Yasuko Teragaki | 1997-01-28 |