Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977881 | Optical pickup with holding mechanism to effectively prevent comatic aberration | Hironobu Tanase, Kenji Yamamoto | 2005-12-20 |
| 6944104 | Method of moving optical pickup, optical pickup, and optical disc apparatus | Hironobu Tanase, Kenji Yamamoto | 2005-09-13 |
| 6839315 | Optical head and optical pickup having improved thermal coefficient matching for thermal expansion adjustment | Koichiro Kishima, Akira Kouchiyama, Kenji Yamamoto, Atsushi Iida | 2005-01-04 |
| 6754168 | Disc cartridge with inner case | — | 2004-06-22 |
| 6487166 | Disc cartridge | — | 2002-11-26 |
| 6298034 | Disk-shaped information memorizing medium cartridge | — | 2001-10-02 |
| 6205116 | Cartridge housing formed to protect disk-shaped medium from dust-particles | — | 2001-03-20 |