Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D611035 | Speaker | Yoshiaki Fukai, Masahiro Mano | 2010-03-02 |
| 6654478 | Electroacoustic transducer | Yoshiharu Oishi, Yoichi Gotoh | 2003-11-25 |
| 6587397 | Electroacoustic transducer | — | 2003-07-01 |
| D453119 | Audible signal for alarms | — | 2002-01-29 |