Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8976980 | Modulation of audio signals in a parametric speaker | Ryo Tsutsui | 2015-03-10 |
| 5412636 | Apparatus for servo-controlling objective lens in recording and/or reproducing apparatus using optical record medium | Takashi Aoki | 1995-05-02 |