Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5627447 | Method and apparatus for detecting current delay angle from motor terminal voltage | Jinghan Tao | 1997-05-06 |
| 5567994 | Active harmonic filter with time domain analysis | Gerald W. Davis, Shiping Huang | 1996-10-22 |
| 5565753 | Method and apparatus for current rebalance in induction motor | Li Chen | 1996-10-15 |
| 5548197 | Method and apparatus for determining motor speed using zero crossing times | Yuan Wang | 1996-08-20 |
| 5488281 | Method and apparatus for predicting winding failure using zero crossing times | Yuan Wang | 1996-01-30 |
| 5473241 | Method and apparatus for RMS measurements in induction motor without sampling | Li Chen | 1995-12-05 |
| 5153489 | Electric current measurement apparatus for a solid state motor controller | Li Chen | 1992-10-06 |
| 5008608 | Controller for starting and stopping electric motors | John C. Merrison, Timothy M. Rowan | 1991-04-16 |
| 4862052 | Method for stopping an electric motor | John C. Merrison, Timothy M. Rowan | 1989-08-29 |
| 4833386 | Apparatus and method for braking an electric motor | — | 1989-05-23 |
| 4800326 | Apparatus and methods for controlling induction motors | — | 1989-01-24 |
| 4767975 | Controller for induction motors | — | 1988-08-30 |