Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7495409 | Method and apparatus for eliminating stall and cogging in multi-phase stepping motors | — | 2009-02-24 |
| 7242593 | Thermally efficient motor housing assembly | — | 2007-07-10 |
| 7154245 | Method to prevent midrange resonance during operation of a multi-phase step motor | Robert Fournier | 2006-12-26 |
| 6897706 | Method for driving a high side P-CHANNEL MOSFET | — | 2005-05-24 |
| 6879128 | Method and apparatus for independently controlling each phase of a multi-phase step motor | Robert Fournier | 2005-04-12 |
| 6867566 | Method and apparatus for improved low current accuracy in multi-phase step motors | Robert Fournier | 2005-03-15 |
| 6002186 | Electric stepper motor having a cylindrical magnetic rotor with a pair of cups made of magnetic material | Allen Bennett | 1999-12-14 |
| 5264770 | Stepper motor driver circuit | — | 1993-11-23 |
| 5225756 | Stepper motor driver circuit | — | 1993-07-06 |