Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9520822 | Circuits and methods for driving eccentric rotating mass motors | David Hernandez, David J. Baldwin, Brandon J. Beckham | 2016-12-13 |
| 9274602 | Haptic actuator controller | David Hernandez, Brandon J. Beckham | 2016-03-01 |
| 9054627 | Method and apparatus to drive a linear resonant actuator at its resonant frequency | David Hernandez-Garduno, Brandon J. Beckham, David J. Baldwin, Brett Forejt | 2015-06-09 |
| 9000690 | Driver for capacitive loads | David J. Baldwin, Boqiang Xiao | 2015-04-07 |
| 8680918 | High voltage driver amplifier for piezo haptics | Brett Forejt, David J. Baldwin | 2014-03-25 |
| 8437483 | Active snubber for improving stability of headphone amplifiers | — | 2013-05-07 |
| 8143944 | Method and apparatus for sensing a current for varying impedance loads | Patrick P. Siniscalchi, Roy Clifton Jones, III | 2012-03-27 |
| 7449959 | Methods and apparatus to detect impedance at an amplifier output | David J. Baldwin | 2008-11-11 |