Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975082 | Variable speed drive with a synchronous electric motor | Stephen G. Crain | 2005-12-13 |
| 6348751 | Electric motor with active hysteresis-based control of winding currents and/or having an efficient stator winding arrangement and/or adjustable air gap | Stephen G. Crain, Cory D. Knudtson, Robert F. D. Piacesi | 2002-02-19 |
| 6137203 | Electric motor with active hysteresis-based control of winding currents and/or having an efficient stator winding arrangement and/or adjustable air gap | Stephen G. Crain, Cory D. Knudtson, Robert F. D. Piacesi | 2000-10-24 |
| 5327071 | Microprocessor control of multiple peak power tracking DC/DC converters for use with solar cell arrays | Martin Frederick | 1994-07-05 |