Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681020 | Microphone circuit with mute and keep alive function | Costas Papopoulos, Victor J. Temple | 2004-01-20 |
| 6580797 | Amplifier circuit for electret microphone with enhanced performance | Costas Papadopoulos | 2003-06-17 |
| 6504937 | Amplifier circuit for electret microphone with enhanced performance | Costas Papadopoulos | 2003-01-07 |
| 6266424 | Electret microphone circuit with low battery disable | Costas Papadopoulos | 2001-07-24 |
| 6137879 | Computer telephony headset amplifier | Costas Papadopoulos, Daniel Davidson | 2000-10-24 |
| 6128384 | Self configuring telephone headset amplifier | Costas Papadopoulos | 2000-10-03 |