Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4621171 | Electroacoustic transducer and a method for manufacturing thereof | Minoru Nishizono | 1986-11-04 |
| 4615105 | Electroacoustic transducer and a method for manufacturing thereof | Minoru Nishizono | 1986-10-07 |
| 4458161 | Electret device | Shigeru Fujiwara | 1984-07-03 |
| 4455494 | Electret device | Masamichi Tanaka | 1984-06-19 |
| 4443711 | Electret device | Masamichi Tanaka | 1984-04-17 |
| 4441038 | Electret device | Masamichi Tanaka | 1984-04-03 |
| 4407898 | Corner pad | Hideo Kato | 1983-10-04 |
| 4390800 | Electret device | Masamichi Tanaka | 1983-06-28 |
| 4321432 | Electrostatic microphone | Hideki Matsutani | 1982-03-23 |