Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6005834 | Optical recording medium recording and reproducing apparatus and optical pickup device | Fumisada Maeda, Toshio Watanabe, Atsushi Fukumoto, Kenji Yamamoto, Kiyoshi Ohsato | 1999-12-21 |
| 5841513 | Apparatus for reproducing sound signals recorded on a motion picture film with digital sound track | Shunji Yoshimura, Yoshiyuki Akiyama, Kiyoshi Ohsato, Toshio Watanabe, Shinji Katsuramoto | 1998-11-24 |
| 5828453 | Lens designing method and objective lens apparatus with two lenses | Kenji Yamamoto, Fumisada Maeda, Toshio Watanabe, Kiyoshi Ohsato | 1998-10-27 |
| 5786947 | Optical pickup device with a floating element | Fumisada Maeda, Kenji Yamamoto, Kiyoshi Ohsato, Toshio Watanabe | 1998-07-28 |
| 5774281 | Optical pickup device for light collection onto an optical recording medium | Fumisada Maeda, Kenji Yamamoto, Kiyoshi Ohsato, Toshio Watanabe | 1998-06-30 |
| 5764613 | optical pickup apparatus | Kenji Yamamoto, Fumisada Maeda, Toshio Watanabe, Kiyoshi Ohsato | 1998-06-09 |
| 5712842 | Optical pick-up device | Kenji Yamamoto, Fumisada Maeda, Kiyoshi Ohsato, Toshio Watanabe | 1998-01-27 |
| 5625633 | Laser light generating apparatus | Atsushi Fukumoto | 1997-04-29 |
| 5550603 | Motion picture film with digital sound track | Shunji Yoshimura, Yoshiyuki Akiyama, Kiyoshi Ohsata, Toshio Watanabe, Shinji Katsuramoto | 1996-08-27 |
| 5032915 | Apparatus for detecting positive and negative noise signals in a video signal | — | 1991-07-16 |
| 4977461 | Dropout detecting circuit with one-half wavelength delay | — | 1990-12-11 |