Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421308 | State detecting device and optical disk device | Naoki Kizu, Kazuhiro Sugiyama, Shigeru Matsui, Noboru Yashima | 2002-07-16 |
| 6331967 | Disk-rotation control apparatus | Shigeru Matsui, Noboru Yashima, Naoki Kizu, Kazuhiro Sugiyama | 2001-12-18 |
| 6275878 | Data recorder and data producing circuit | Noboru Yashima, Kazuhiro Sugiyama, Shigeru Matsui, Naoki Kizu | 2001-08-14 |
| 6259662 | Disk rotation control device | Shigeru Matsui, Kazuhiro Sugiyama, Noboru Yashima, Naoki Kizu | 2001-07-10 |
| 6118742 | Disk-rotation control apparatus | Shigeru Matsui, Noboru Yashima, Naoki Kizu, Kazuhiro Sugiyama | 2000-09-12 |
| 5852805 | MPEG audio decoder for detecting and correcting irregular patterns | Kazuhiro Sugiyama | 1998-12-22 |
| 5694522 | Sub-band audio signal synthesizing apparatus | Kazuhiro Sugiyama | 1997-12-02 |