Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6472797 | Piezoelectric electro-acoustic transducer | — | 2002-10-29 |
| 6472798 | Piezoelectric acoustic components | — | 2002-10-29 |
| 6445108 | Piezoelectric acoustic component | Tetsuo Takeshima, Muneyuki Daidai, Akihiro Nomura, Masayuki Fujino | 2002-09-03 |
| 6420818 | Electroacoustic transducer | Tetsuo Takeshima | 2002-07-16 |