Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4551849 | Vehicle panel speaker for automotive audio system utilizing part of a vehicle panel as a sound-producing medium | Junichi Kasai, Takayuki Yanagishima, Akio Ajimine, Yoshiaki Murakami, Tatsuya Watanabe | 1985-11-05 |
| 4550428 | Driver unit for automotive audio speaker | Takayuki Yanagishima, Junichi Kasai, Akio Ajimine, Tatsuya Watanabe, Yoshiaki Murakami | 1985-10-29 |
| 4499340 | Speaker for automotive audio system with vehicle panel utilized as sound amplifying medium | Junichi Kasai, Takayuki Yanagishima, Akio Ajimine, Yoshiaki Murakami, Tatsuya Watanabe | 1985-02-12 |