Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5003241 | Motor stoppage detection using back emf voltage | John C. Merrison | 1991-03-26 |
| 4996470 | Electric motor speed control apparatus and method | John C. Merrison | 1991-02-26 |
| 4978897 | Motor controller with an improved stopping technique | John C. Merrison, Robert J. DeLange | 1990-12-18 |
| 4916370 | Motor stoppage apparatus and method using back emf voltage | Robert J. DeLange | 1990-04-10 |
| 4862052 | Method for stopping an electric motor | Peter Unsworth, John C. Merrison | 1989-08-29 |
| 4706012 | Frequency compensated regulator | Russel J. Kerkman | 1987-11-10 |
| 4680695 | Cross coupled current regulator | Russel J. Kerkman | 1987-07-14 |