Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7447136 | Optical pickup and optical disc apparatus | Toru Hama | 2008-11-04 |
| 7154839 | Optical pickup apparatus and signal recording and/or reproducing apparatus | Naohiro Netsu | 2006-12-26 |
| 6744720 | Optical element and optical pick-up | — | 2004-06-01 |
| 6392977 | Optical pickup with a hologram to limit the aperture of two light beams with different wavelengths | Kazuhiko Fujiie | 2002-05-21 |
| 6347015 | Optical pickup device | — | 2002-02-12 |
| 6337774 | Optical pickup device | — | 2002-01-08 |
| 6335836 | Optical pickup device | — | 2002-01-01 |
| 6252686 | Optical pickup device | — | 2001-06-26 |
| 5923633 | Optical reproducing device compatible with multiple media recording densities | — | 1999-07-13 |
| 5719845 | Optical pick-up device composed of composite prism made of uniaxial crystal and non-axial crystal | — | 1998-02-17 |
| 5684780 | Optical pickup device having optical element exhibiting polarized light selectivity loaded thereon and optical apparatus having the optical pickup device loaded thereon | — | 1997-11-04 |
| 5559769 | Recording/reproducing apparatus for both read-only and magneto-optical disc-shaped recording medium | Ryo Ando, Kazuhiko Fujiie | 1996-09-24 |
| 5550798 | Enhanced optical beam splitter to increase the kerr rotation angle | Satoshi Hineno | 1996-08-27 |
| 5523994 | Magneto-optical recording/reproducing apparatus with optical pickup device having a multi-layer dielectric film beam splitter | Kazuhiko Fujiie | 1996-06-04 |
| 5479387 | Optical head including multiple photo detectors for reading signals and error signals for servoing from both a read-only recording medium and a magneto-optical recording medium | Ryo Ando, Kazuhiko Fujiie | 1995-12-26 |
| 5467336 | Magneto-optical recording/reproducing apparatus with optical pickup device having a multi-layer dielectric film beam splitter | Kazuhiko Fujiie | 1995-11-14 |
| 5453607 | Photodetector for recording/reproducing apparatus for both read only and magneto-optical disk shaped recording medium | Ryo Ando, Kazuhiko Fujiie | 1995-09-26 |
| 5428596 | Optical pickup apparatus | Satoshi Hineno, Yoshito Asoma | 1995-06-27 |
| 5379990 | Shock absorber device for a portable electronic apparatus | Takashi Hishinuma | 1995-01-10 |
| 5341357 | Optical disc recording apparatus | Hiroshi Mukawa | 1994-08-23 |