Issued Patents All Time
Showing 76–83 of 83 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5796701 | Optical pickup and opto-magnetic signal reproducing apparatus | Noriaki Nishi, Shuichi Matsumoto, Masato Hattori | 1998-08-18 |
| 5748368 | Polarization optical element | Hitoshi Tamada, Shuichi Matsumoto, Noriaki Nishi | 1998-05-05 |
| 5742577 | Prism has a plurality of reflective regions each with a predetermined phase difference | Hideyoshi Horimai, Katsuhiro Seo, Kiyoshi Toyota | 1998-04-21 |
| 5732060 | Optical pickup and optical recording medium reproducing apparatus having a wire grid unit | Kiyoshi Toyota, Noriaki Nishi, Hitoshi Tamada, Shuichi Matsumoto | 1998-03-24 |
| 5727111 | Optical pick-up and light detecting cover therefor | Hidehiro Kume, Shuzo Sato, Takeshi Kubo | 1998-03-10 |
| 5577018 | Phase changing apparatus and optical pickup apparatus for magneto-optic storage device using same | Hideyoshi Horimai, Katsuhiro Seo, Kiyoshi Toyota | 1996-11-19 |
| 5563869 | Prism has a plurality of reflective regions each with a predetermined phase difference | Hideyoshi Horimai, Katsuhiro Seo, Kiyoshi Toyota | 1996-10-08 |
| 5528575 | Optical pickup apparatus for a magneto-optical recording medium | — | 1996-06-18 |