Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5081682 | On-vehicle automatic loudness control apparatus | Fumio Tamura, Masayaki Kato | 1992-01-14 |
| 4980914 | Sound field correction system | Yoshiro Kunugi, Akio Tokumo, Toshikazu Yoshimi, Yoshio Sasaki | 1990-12-25 |
| 4914707 | Balanced vehicular speaker system | Toshikazu Yoshimi, Hideo Yamamoto, Takeshi Sato, Hisashi Kihara | 1990-04-03 |
| 4868878 | Sound field correction system | Yoshiro Kunugi, Akio Tokumo, Toshikazu Yoshimi, Yoshio Sasaki, Shuuichi Mori +2 more | 1989-09-19 |
| 4864246 | Mobile automatic volume control apparatus | Masayuki Kato, Fumio Tamura | 1989-09-05 |
| 4648117 | Mobile sound field correcting device | Yoshiro Kunugi, Akio Tokumo, Toshikazu Yoshimi, Yoshio Sasaki, Makoto Odaka +1 more | 1987-03-03 |
| 4622691 | Mobile sound field correcting device | Akio Tokumo, Yoshiro Kunugi, Toshikazu Yoshimi, Yoshio Sasaki, Makoto Odaka +1 more | 1986-11-11 |