Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7027604 | Circuit to prevent acoustic feedback for a cellular speakerphone | Kee Eng Soo, Michael D. Geren, Macwien Krishnamurthi Annamalai | 2006-04-11 |
| 6603286 | Battery charging circuit with undervoltage current control | John E. Herrmann | 2003-08-05 |
| 6456204 | Data transfer indicator circuit | Marc B. Riley | 2002-09-24 |
| 6400587 | Universal input flyback with secondary shunt voltage limiter | Michael D. Geren | 2002-06-04 |
| 6151231 | Circuit and method for reactive energy recirculation control in a series-resonant converter | Roland Sylvere Saint-Pierre, John Wendell Oglesbee | 2000-11-21 |
| 6081438 | Parallel-loaded series resonant converter having a piezo-electric crystal as self-oscillating element | Roland Sylvere Saint-Pierre | 2000-06-27 |
| 5714863 | Circuit for enhancing power delivery of an energy source | B. Chester Hwang | 1998-02-03 |