Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8437812 | Headset with auxiliary input(s) for cell phone and/or other devices | — | 2013-05-07 |
| 8320591 | ANR headphones and headsets | — | 2012-11-27 |
| 7907721 | Headset with auxiliary input jacks(s) for cell phone and/or other devices | — | 2011-03-15 |
| 7859233 | Apparatus and method for start-up for a synchronous switching regulator | Faruk Jose Nome Silva, Kwok-Fu Chiu, Barry James Culpepper | 2010-12-28 |
| 7668308 | In-the-ear headset and headphone enhancements | — | 2010-02-23 |
| 7317802 | Active-noise-reduction headsets with front-cavity venting | — | 2008-01-08 |
| 7215766 | Headset with auxiliary input jack(s) for cell phone and/or other devices | — | 2007-05-08 |
| 7045992 | Apparatus and method for start-up for a synchronous switching regulator | Faruk Jose Nome Silva, Kwok-Fu Chiu, Barry James Culpepper | 2006-05-16 |
| 6735316 | Cup-in-a-cup structure and assembly method for active-noise-reduction headsets | — | 2004-05-11 |
| 6704428 | Automatic turn-on and turn-off control for battery-powered headsets | — | 2004-03-09 |
| 6625287 | Enhancing automatic noise reduction using negative output resistance | — | 2003-09-23 |
| 5097224 | Self-biasing, low noise amplifier of extended dynamic range | Peter L. Madaffari | 1992-03-17 |