Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4600874 | Excitation current control for induction motor drive using load commutated inverter circuit | Loren H. Walker, Herbert W. Weiss, James W. Sember | 1986-07-15 |
| 4449087 | Flux feedback firing control for a load commutated inverter | David L. Lippitt, Paul M. Espelage, Loren H. Walker, Herbert W. Weiss | 1984-05-15 |
| 4446414 | Terminal voltage limit regulator for a load commutated inverter | — | 1984-05-01 |
| 4443747 | Transitioning between multiple modes of inverter control in a load commutated inverter motor drive | B. Paul Chausse, Paul M. Espelage, David L. Lippitt | 1984-04-17 |
| 4427934 | Current limiter for a load commutated inverter | — | 1984-01-24 |
| 4426611 | Twelve pulse load commutated inverter drive system | Paul M. Espelage, David L. Lippitt | 1984-01-17 |