Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7050594 | Sound control unit and sound system | Tsuyoshi Nakada, Teruho Yamada, Susumu Fujiwara | 2006-05-23 |
| 6259799 | Speaker system | Seiki Suzuki | 2001-07-10 |
| 6148088 | Speaker system | Seiki Suzuki | 2000-11-14 |
| 6087960 | Accident sound detection circuit | Makoto Koura, Toshimitsu Seri | 2000-07-11 |
| 5990801 | Accident sound detection circuit | Makoto Koura, Toshimitsu Seri | 1999-11-23 |
| 5953431 | Acoustic replay device | Noboru Yashima, Masayuki Ishida, Fumio Suzuki, Ko Nishino, Shinji Takeuchi | 1999-09-14 |
| 5943428 | Accident sound detector | Toshimitsu Seri, Makoto Koura | 1999-08-24 |
| 5432860 | Speaker system | Syoji Kasajima, Kazumi Honma, Isao Otsuka | 1995-07-11 |
| 5384856 | Acoustic system | Yoshiharu Osuga, Noboru Yashima | 1995-01-24 |