Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5790356 | Transformer protection system for protecting source transformers from ill effects of zero-sequence currents | Luke Yu | 1998-08-04 |
| 4772977 | System for protection of electrical machines against damage from residual voltage effects | Luke Yu | 1988-09-20 |
| 4710841 | System for production of induction machines against damage from residual voltage effects | — | 1987-12-01 |
| 4333018 | Wind energy conversion system with reaction torque for power control | — | 1982-06-01 |
| 4219308 | Torque control system for wind energy conversion devices | — | 1980-08-26 |