Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720748 | Static commissioning method and apparatus to identify rated flux current | Russel J. Kerkman | 2004-04-13 |
| 6690139 | Method and apparatus to limit motor current at low frequencies | — | 2004-02-10 |
| 6014007 | Method and apparatus for starting an AC drive into a rotating motor | Timothy M. Rowan, Russel J. Kerkman | 2000-01-11 |
| 5965995 | Transient inductance tuner for motor control | Russel J. Kerkman, Timothy M. Rowan | 1999-10-12 |
| 5923144 | Frequency generator for a motor controller | Timothy M. Rowan, Russel J. Kerkman, Kevin G. Stachowiak | 1999-07-13 |
| 5717305 | Method and apparatus for starting an electric motor | Timothy M. Rowan, Russel J. Kerkman, Kevin G. Stachowiak | 1998-02-10 |
| 5502360 | Stator resistance detector for use in electric motor controllers | Russel J. Kerkman, Doyle F. Busse | 1996-03-26 |
| 5479081 | AC motor controller with voltage margin adjustment | Timothy M. Rowan, Russel J. Kerkman | 1995-12-26 |
| 5298847 | Counter EMF detector for use in electric motor controllers | Russel J. Kerkman, Timothy M. Rowan | 1994-03-29 |
| 5121043 | PWM control in the pulse dropping region | Russel J. Kerkman, David Leggate | 1992-06-09 |
| 4958117 | Frequency control based on sensing voltage fed to an induction motor | Russel J. Kerkman | 1990-09-18 |