Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6445671 | Optical pickup device having a shielding protection | Tadashi Takeda, Hisahiro Ishihara, Taminori Masuzawa, Yuichi Takei | 2002-09-03 |
| 6438075 | Light-pick-up device and light source unit incorporated in the same | Tadashi Takeda, Taminori Masuzawa | 2002-08-20 |
| 6403007 | Method for manufacturing plate boehmite | Kenji Kido, Kaichi Fujiyoshi, Yasuhiro Nishigaki | 2002-06-11 |