Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5572531 | Digital radiotelephone system | Koji Nitta | 1996-11-05 |
| 5305375 | Information service apparatus | Ryoji Sagara, Shigehisa Iwanaga, Akihiro Shinohara | 1994-04-19 |
| 5243583 | Optical pickup device with dual grating element | Shigeru Ohuchida | 1993-09-07 |
| 5029154 | Optical reproducing apparatus | Hideo Maeda | 1991-07-02 |