Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6744180 | Piezoelectric electroacoustic transducer | Yoshitaka Nakamura, Kiyotaka Tajima, Tetsuo Takeshima, Tadashi Okuzawa | 2004-06-01 |
| 6700302 | Piezoelectric resonator | Takashi Yamamoto | 2004-03-02 |