Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6853325 | Pulse width modulation digital amplifier | Hiroyuki Harada | 2005-02-08 |
| 6642875 | PWM converting circuit, D/A converter and PWM converting method with improved resolution | Hiroyuki Harada | 2003-11-04 |
| 6472592 | Apparatus for and method of adding sound signal in system having limited number of sound generators | — | 2002-10-29 |