Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5822439 | Noise control device | Kazuhiro Sakiyama, Kazuya Sako, Masaaki Nagami | 1998-10-13 |
| 5499302 | Noise controller | Masaaki Nagami, Kazuya Sako, Kazuhiro Sakiyama | 1996-03-12 |