Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10291188 | Preamplifier and method | — | 2019-05-14 |
| 9966909 | Preamplifier and method | — | 2018-05-08 |
| 8922279 | Voltage controlled variable gain amplifier circuit | Taichiro Kawai | 2014-12-30 |
| 8600079 | Amplifier circuit of capacitor microphone | Yasuyuki Kimura, Masahito Kanaya | 2013-12-03 |