Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6157150 | Brushless sensorless DC motor assembly with precisely controllable positioning | — | 2000-12-05 |
| 6031439 | Bi-directional hall-effect control device | David V. Adams, Thomas G. Cooper, Alan W. Petersen | 2000-02-29 |
| 5909098 | Downhole pumping system with variable speed pulse-width modulated inverter coupled to electrical motor via non-gap transformer | Allan B. Plunkett, Kelly Ray Packard, Jacqueline Rae Akerson | 1999-06-01 |
| 5844397 | Downhole pumping system with variable speed pulse width modulated inverter coupled to electrical motor via non-gap transformer | Allan B. Plunkett, Kelly Ray Packard, Jacqueline Rae Akerson | 1998-12-01 |
| 5453594 | Radiation beam position and emission coordination system | — | 1995-09-26 |
| 5015939 | Control circuit for switched reluctance motor | — | 1991-05-14 |
| 4774428 | Compact three-phase permanent magnet rotary machine having low vibration and high performance | — | 1988-09-27 |
| 4647802 | Variable reluctance motor with reduced torque ripple | — | 1987-03-03 |