Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7564985 | Condenser microphone and method of manufacturing substrate therefor | Akira Yamamoto | 2009-07-21 |
| 7430915 | Vibration sensor | Mamoru Yasuda, Takahisa Ohtsuji | 2008-10-07 |
| 7352873 | Electret-condenser microphone | Yasuhiro Shigeno, Mamoru Yasuda, Naoki Toyoda | 2008-04-01 |
| 7223136 | Condenser microphone and method for manufacturing substrate for the same | Akira Yamamoto | 2007-05-29 |
| 7194905 | Acceleration sensor | Akira Yamamoto | 2007-03-27 |