Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5828453 | Lens designing method and objective lens apparatus with two lenses | Kenji Yamamoto, Isao Ichimura, Toshio Watanabe, Kiyoshi Ohsato | 1998-10-27 |
| 5786947 | Optical pickup device with a floating element | Isao Ichimura, Kenji Yamamoto, Kiyoshi Ohsato, Toshio Watanabe | 1998-07-28 |
| 5774281 | Optical pickup device for light collection onto an optical recording medium | Isao Ichimura, Kenji Yamamoto, Kiyoshi Ohsato, Toshio Watanabe | 1998-06-30 |
| 5764613 | optical pickup apparatus | Kenji Yamamoto, Isao Ichimura, Toshio Watanabe, Kiyoshi Ohsato | 1998-06-09 |
| 5712842 | Optical pick-up device | Kenji Yamamoto, Isao Ichimura, Kiyoshi Ohsato, Toshio Watanabe | 1998-01-27 |
| 5402407 | Optical pickup apparatus and method for adjusting optical axis thereof | Naoya Eguchi | 1995-03-28 |
| 5243580 | Head for a magneto-optical recording apparatus | — | 1993-09-07 |